NGU Idle vs Theory of Magic (Arcanum)
Both are rpg, deep incrementals. Here's how they differ, from the same data we use everywhere on IncrementalGames.org.

NGU Idle
Joke-dense RPG idler with dozens of interlocking systems. Beating a boss is the easy part; allocating energy is the game.

Theory of Magic (Arcanum)
A text-heavy mage's apprenticeship with hundreds of spells, classes and dungeons. Dense, charming, community-kept.
The short version
- NGU Idle is the more idle of the two (leans idle); Theory of Magic (Arcanum) asks for more hands-on play.
- Theory of Magic (Arcanum) is completely free; NGU Idle is free-to-play with purchases.
Side by side
| Fact | NGU Idle | Theory of Magic (Arcanum) |
|---|---|---|
| Ending | Endless | Endless |
| Time to finish | ∞ | ∞ |
| Idle (0 = active) | 65% | 45% |
| Offline progress | Yes | ? |
| Prestige layers | 1 | 0 |
| Steam positive | 96% | ? |
| Galaxy rating | ? | 4.5 / 5 |
| Price | Free-to-play | Free |
| Platforms | Steam, Browser | Browser |