73%Strong matchProtolife
86%43686% positive reviews, Very Positive across 436 reviews·Tower Defense · Pixel Graphics
—Tower defense / Roguelike / Sci-Fi / Pixel Art game with boomer games aesthetics. Mine resources and shoot those disgusting aliens right in their faces. Unlock new technology, develop new strategies and explore the planet. A modern old-school Pixel Art experience with the vibe of 90s classics.
Diffusion
Steam
Use mining drills to gather ores and smelt them to gain building materials.

Defend your mining site from waves of disgusting hostile alien creatures.

Adapt your defenses to special alien abilities, daytime and biome.

Research new technology to expand your arsenal of passive and active buildings.

Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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The best games like Diffusion are Protolife, Broken Universe - Tower Defense, Tower Dominion, 2112TD: Tower Defense Survival, and Desperate Place.
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