AION 2 vs Slay the Spire 2: Player Count Comparison
AION 2 is currently the bigger game, with 233,693 players in game against 43,755 for Slay the Spire 2 — about 5.3× as many. Both figures are live from Steam and update daily.
AION 2
AION 2 is the only MMORPG built around a world where the sky is the battlefield. Choose your faction, ascend as a Daeva, and fight a faction war across a world 36 times larger than the original. PC only, on Unreal Engine 5.
| Steam rank | #8 |
|---|---|
| Weekly peak | 301,962 |
| Reviews | Mixed |
| Price | Free to play |
| Released | 5 Oct, 2026 |
Slay the Spire 2
The iconic roguelike deckbuilder returns. Craft a unique deck, encounter bizarre creatures, and discover relics of immense power in Slay the Spire 2!
| Steam rank | #11 |
|---|---|
| Weekly peak | 104,065 |
| Reviews | Mixed |
| Price | HK$ 149.00 |
| Released | 5 Mar, 2026 |
AION 2 player trend
Slay the Spire 2 player trend
Which has more players?
As of October 18, 2026, AION 2 leads with 233,693 concurrent players (Steam rank #8) while Slay the Spire 2 has 43,755 (rank #11). Player count measures how busy a game is right now, not how good it is — check the review scores above alongside it.
See both inside the full Steam top 100 chart.