8-22 October 2026 on Steam
Games about making small numbers become irresponsibly large numbers.
Explore 197 gamesSteam event opens in8 Oct
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197
Games
162
Playable demos
16
On sale
23
New releases
8 Oct
Until doors open
Find your next productivity problem.
Sir, We Have an Orc Problem
Mumpitz Games
The festival has its own idle game
Start in a bedroom with $16 and Ruby. Buy the festival’s games at their real Steam prices, run them on machines you upgrade, and work your way up to a data centre. Free, in your browser.
Play the festival game
Featured collections
Build the machine
Automation & factory games
IGTAP: an Incremental Game That's Also a Platformer
Pepper Tango Games
A two-week Steam festival for games where numbers go up.
An Event About Incrementals celebrates idle, incremental, automation and “numbers go up” games: the ones you check once more before bed and then again at 3 a.m. Every participating title is on this page with its demo, discount and release status. Play, wishlist and buy on Steam.
Organised by Catoptric Games×Lazy Otter×Next in Game, 8-22 October 2026.
Steam event opens in8 Oct