After reading this you will be able to turn the monster data for levels 20 to 50 in MapleStory Classic World into a repeatable EXP per hour comparison, and you will know which inputs the data gives us and which it does not. The short version: EXP per HP tells you how efficient a monster is to damage, the count on a map tells you how much is standing there at once, and respawn decides how fast it refills. We have the first two. We do not have the third, and this guide says so rather than guessing.
Assumptions and what the data does not tell us
Every figure below comes from the fact sheet, which takes in-game numbers from mapleclassic.wiki. The band is level 20 to 50, where the sheet counts 59 monsters in range. The table shows the top ten of those, ranked by EXP per HP. That ranking is our own derived ordering, not a number the wiki publishes. The EXP/HP column is shown as listed and I do not round it further.
No class, party size or potion budget is recorded, so I do not state a character here. Where I compare monsters, I compare the monsters themselves, not a Hunter, a Magician or anyone in particular.
Here is what is not in the data:
- Respawn timers. No respawn time is recorded for any monster or map.
- Damage per hit. With no class or skill rank fixed, I cannot give a kills per hour figure for any character.
- Drop rates and meso income. Nothing is listed yet, so this guide covers EXP only.
- Potion costs. None are listed, so any sum here assumes you never stop to refill.
- Spawn behavior. The sheet gives a count on each map. It does not say whether that is a cap, an average or a fixed spawn.
That means every result here is an efficiency ratio or a comparison, not a finished per hour number. The goal is to show the structure so that when you time your own kills per hour you can finish the sum yourself.
The formula in plain terms
There are two ways to write EXP per hour, and which one applies depends on what is slowing you down.
- Respawn-bound: you kill everything the moment it appears and then wait. EXP per hour is EXP per kill multiplied by kills per hour, and kills per hour is set by how fast the map refills.
- Damage-bound: monsters are always standing and you cannot kill them fast enough. EXP per hour is the HP you remove per hour multiplied by EXP per HP, because each point of HP is worth a fixed slice of EXP.
- The real answer sits in between: early on a fresh map you are damage-bound, and once you clear it you become respawn-bound while the monsters return.
This is why EXP per HP is a sensible first filter. If two monsters are equally easy to reach, the one with the higher EXP per HP pays more for every point of damage. But it is only the first filter, because it says nothing about how many monsters there are or how quickly they come back.
The top ten by EXP per HP
The table is for levels 20 to 50, per mapleclassic.wiki data. HP and EXP are per kill.
| Rank | Monster | Level | HP | EXP | EXP/HP | Weak to |
|---|---|---|---|---|---|---|
| 1 | Jr. Necki | 21 | 272 | 39 | 0.143 | Not listed |
| 2 | Stirge | 20 | 296 | 37 | 0.125 | Not listed |
| 3 | Zombie Mushroom | 24 | 436 | 45 | 0.103 | Holy |
| 4 | Blue Mushroom | 19 | 342 | 35 | 0.102 | Not listed |
| 5 | Horny Mushroom | 22 | 403 | 41 | 0.102 | Not listed |
| 6 | Fairy 1 | 29 | 593 | 54 | 0.091 | Poison |
| 7 | Fairy 2 | 29 | 593 | 54 | 0.091 | Poison |
| 8 | Fairy 3 | 29 | 593 | 54 | 0.091 | Poison |
| 9 | Fairy 4 | 29 | 593 | 54 | 0.091 | Poison |
| 10 | Iron Hog | 28 | 572 | 52 | 0.091 | Lightning |
Read the table in two directions. Going down, EXP per HP falls from 0.143 to 0.091. Going across, EXP per kill rises with level: Jr. Necki gives 39 EXP per kill at level 21, while Fairy 4 gives 54 EXP per kill at level 29. So the top of the table is the cheapest EXP per point of damage, and the bottom is the richest EXP per kill. Which one earns more EXP per hour depends on whether you are damage-bound or respawn-bound.
The gap between the two ends is concrete. Fairy 4 pays more EXP per kill than Jr. Necki (54 against 39), but it also carries far more HP (593 against 272). If you are damage-bound, the higher ratio on Jr. Necki wins per hour. If you are respawn-bound, every kill is worth more on Fairy 4, so it wins per hour. The four Fairy rows share an identical level, HP and EXP, so any difference among them comes down to maps and counts.
Worked examples: the count on the map
The count on the map is the other half of the data. The full EXP in one clear of a map is the count multiplied by EXP per kill, and the full HP to chew through is the count multiplied by HP per kill. I list the inputs and leave the products out, because a product is not a figure the sheet records and the clear time and respawn time are unknown anyway.
| Map | Monster | Count on map | EXP per kill | HP per kill | EXP/HP |
|---|---|---|---|---|---|
| Dangerous Croko I | Jr. Necki | 27 | 39 | 272 | 0.143 |
| Dangerous Steam | Stirge | 38 | 37 | 296 | 0.125 |
| Ant Tunnel III | Zombie Mushroom | 61 | 45 | 436 | 0.103 |
| Ant Tunnel IV | Horny Mushroom | 41 | 41 | 403 | 0.102 |
| Pig Park II | Iron Hog | 22 | 52 | 572 | 0.091 |
| The Entrance of Golem's Temple | Fairy 4 | 3 | 54 | 593 | 0.091 |
Here is what each row teaches, comparing inputs directly.
- Dangerous Croko I, Jr. Necki. It has 27 monsters at 39 EXP per kill, with the listed 0.143 EXP per HP. Every point of damage here is worth the most in the table. The cost is a modest pool.
- Dangerous Steam, Stirge. It has 38 monsters at 37 EXP per kill. Compared with Dangerous Croko I, the count is higher while EXP per kill is slightly lower, so a full clear pays more only if the larger count outweighs the lower per-kill figure. A bigger pool helps most when you are respawn-bound, because you run out of targets later.
- Ant Tunnel III, Zombie Mushroom. It has 61 monsters at 45 EXP per kill. Both inputs exceed those of Dangerous Croko I (27 at 39), so a full clear here pays more than a full clear there, though at a ratio of 0.103 against 0.143. Zombie Mushroom is listed as weak to Holy, which matters if your damage is that element.
- Ant Tunnel IV, Horny Mushroom. It has 41 monsters at 41 EXP per kill and a ratio of 0.102. No weakness is listed, so I make no claim there.
- Pig Park II, Iron Hog. It has 22 monsters at 52 EXP per kill. Iron Hog is listed as weak to Lightning.
- The Entrance of Golem's Temple, Fairy 4. It has only 3 monsters at 54 EXP per kill. The pool is tiny, so on this map you would likely spend most of your time waiting on respawn, which is the one number we do not have.
Why EXP per HP alone does not give you EXP per hour
The examples show the levers separately. A ratio can be excellent and still be a poor place to train if the pool is small. Jr. Necki leads on EXP per HP, yet in the table above Ant Tunnel III offers more Zombie Mushrooms (61) at a higher EXP per kill (45) than Dangerous Croko I offers Jr. Necki (27 at 39). Smaller pools also run dry sooner, which is the point where respawn takes over as your limit.
Spawn count and respawn pull in different directions, and the data only has one of them. If respawn works the same on two maps, the larger pool refills more monsters per cycle, which favors Ant Tunnel III or Dangerous Steam. If instead a map brings monsters back one at a time, pool size matters less and EXP per kill matters more, which favors the Fairy and Iron Hog rows. Without a recorded respawn we cannot choose between those cases, and any source that hands you a single EXP per hour number for these maps is working from data that is not in our sheet.
Weakness matters in a different way. A listed weakness is a chance to raise the damage you deal per hour, which raises EXP per hour directly while you are damage-bound. The sheet lists Holy for Zombie Mushroom, Poison for the four Fairy rows, and Lightning for Iron Hog. It lists no weakness for Jr. Necki, Stirge, Blue Mushroom or Horny Mushroom.
Mixed maps blur the simple sums. Ant Tunnel III lists Zombie Mushroom at 61 and Horny Mushroom at 38 on the same map. Dangerous Steam lists Stirge at 38, Zombie Mushroom at 6 and Horny Mushroom at 5. To get the whole clear, multiply each monster's count by its own EXP per kill and add the lines together. On Dangerous Steam that means 38 times 37 for Stirge, 6 times 45 for Zombie Mushroom and 5 times 41 for Horny Mushroom. The extra monsters add a small share next to the Stirge line, but they do count, and they also add HP you have to remove.
How to measure your own EXP per hour
The data gives you the efficiency and the pool. You supply the clock. This method needs no number we do not have.
- Pick a map from the table and note the monster, its EXP per kill and the count on the map.
- Fight there for a fixed stretch of time you choose, and count your kills.
- Scale your kills up to kills per hour, then multiply by EXP per kill. That is your EXP per hour for that map, with your class, your party size and your potion budget baked in.
- Check whether you were ever standing with no targets. If yes, you were respawn-bound, and a map with a bigger pool or more EXP per kill is the next thing to try.
- If you were never short of targets, you were damage-bound. The fix is more damage, or a monster with a better EXP per HP, such as one that is weak to your element.
Record your result next to the map name and your level. Because the sheet has no respawn figure, your own timing is the only source for it, and it is more useful than a guess. Run each map for the same length of time so the results are comparable.
Launch scope and what to expect
Nexon's FAQ states that Founder's Access begins on October 6, 2026 and Grand Launch is October 21, 2026, and that progress made during Founder's Access carries into Grand Launch with no wipe between the two. Classic World runs inside the existing Global MapleStory (GMS) client. The numbers above are the mapleclassic.wiki values for the launch game, which covers Victoria Island with first and second job only. Nothing here depends on third job or on any region held back from launch. If a value changes during testing or after release, the ratios and the method stay the same and only the inputs need replacing.
The takeaway is conditional. Between levels 20 and 50, when your damage is the limit, the highest EXP per HP in the table is Jr. Necki at 0.143. When respawn is the limit, EXP per kill and the size of the pool matter more, and among the six example maps Ant Tunnel III stands out with the highest count (61) and a higher EXP per kill (45) than any of the first four examples except none, since Pig Park II and Fairy 4 pay 52 and 54 per kill on smaller pools. Which of those cases you are in is something only a timed run can tell you.
Last verified 2026-10-06 against mapleclassic.wiki data synced 2026-10-01 and Nexon's Classic World FAQ.
Frequently asked
- How do you calculate EXP per hour in MapleStory?
- Multiply EXP per kill by kills per hour. If monsters are always available and you cannot kill them fast enough, you can also multiply the HP you remove per hour by the monster's EXP per HP.
- Which monster has the best EXP per HP between levels 20 and 50?
- Per mapleclassic.wiki data, Jr. Necki ranks first at 0.143 EXP per HP (39 EXP for 272 HP at level 21), followed by Stirge at 0.125. That ranking only matters when damage, not respawn, is what limits you.
- What is the respawn time for monsters in Classic World?
- It is not listed in our data, so we do not give a figure. Time it yourself on the map you train on.
- Is a higher EXP per HP always better for training?
- No. It helps most when you are damage-bound. If you clear the map and wait for respawn, EXP per kill and the number of monsters on the map matter more.
- Which Classic World monsters are weak to Poison, Holy or Lightning?
- The sheet lists Zombie Mushroom as weak to Holy, Fairy 1 through Fairy 4 as weak to Poison, and Iron Hog as weak to Lightning. No weakness is listed for Jr. Necki, Stirge, Blue Mushroom or Horny Mushroom.
