Finding complete, feature-rich PC games under 150 MB is a challenge, as most modern titles are massive. However, the "under 150 MB" category is a goldmine for Indie Gems, Retro-style RPGs, and Highly Optimized Shooters.
Important: “Under 150 MB upd” usually means post-update size — some games might be 50 MB initially but grow after patches. This guide focuses on games that stay below 150 MB even after all updates.
c) Knytt Stories (~12 MB)
Atmospheric exploration platformer. Play as a tiny creature in huge, eerie worlds. Community-made levels extend life forever.
4. OpenTTD (Transport Tycoon Deluxe)
- Size: ~55 MB (Base) + ~90 MB for assets = ~145 MB total
- Last Updated: 2024 (Version 14.1)
- The Pitch: An open-source remake of the 1995 classic. Build trains, buses, and airplanes to connect cities and make billions.
- Why it fits: This game is eternally updated. The "UPD" versions add modern QoL features like auto-timelapses and multiplayer servers. It is the best management sim under 150MB.
Here are some of the best highly compressed and lightweight PC games that take up less than 150 MB of storage space, making them perfect for low-end systems, laptops, or quick downloads. 1. Retro Action & Shooters Alien Shooter
b) Warzone 2100 (~145 MB)
Pioneer of custom unit design. Design tanks with different chassis, turrets, and propulsion. Campaign + skirmish. Open-source and still updated in 2026.
