24 games ranked by how much the tags Steam players vote on them overlap with Unstoppable Gorg's. A rare tag counts for far more than one that sits on half the store, and popularity never moves a game up.
What they share most: Tower Defense, Strategy, Sci-fi, Aliens, Casual, Touch-Friendly.

1·Defense Grid: The Awakening
99% match · Tower Defense, Strategy
96% of 5,380 reviews positive

2·Fieldrunners
99% match · Tower Defense, Strategy
67% of 349 reviews positive

3· Fieldrunners 2
99% match · Tower Defense, Strategy
86% of 537 reviews positive

4·DG2: Defense Grid 2
99% match · Tower Defense, Strategy
87% of 3,467 reviews positive

5·Evil Defenders
99% match · Tower Defense, Strategy
82% of 406 reviews positive

6·iBomber Defense
99% match · Tower Defense, Strategy
73% of 248 reviews positive

7·Harvest: Massive Encounter
99% match · Tower Defense, Strategy
79% of 164 reviews positive

8·Anomaly Defenders
99% match · Tower Defense, Strategy
78% of 689 reviews positive

9·Terrorhedron Tower Defense
99% match · Tower Defense, Strategy
84% of 1,176 reviews positive

10·Shad'O
99% match · Tower Defense, Strategy
54% of 127 reviews positive

11·Cubemen
99% match · Tower Defense, Strategy
71% of 512 reviews positive

12·War in a Box: Paper Tanks
99% match · Tower Defense, Strategy
71% of 209 reviews positive

13·Sol Survivor
99% match · Tower Defense, Strategy
90% of 441 reviews positive

14·Revenge of the Titans
99% match · Tower Defense, Strategy
82% of 1,258 reviews positive

15·GemCraft - Chasing Shadows
99% match · Tower Defense, Strategy
95% of 4,415 reviews positive · 95 playing

16·Ancient Planet Tower Defense
99% match · Tower Defense, Strategy
82% of 1,207 reviews positive

17·Island Defense
99% match · Tower Defense, Strategy
53% of 122 reviews positive

18·Cubemen 2
99% match · Tower Defense, Strategy
68% of 227 reviews positive

19·Space Run Galaxy
99% match · Tower Defense, Strategy
64% of 1,035 reviews positive

20·Rock 'N' Roll Defense
99% match · Tower Defense, Strategy
87% of 3,978 reviews positive

21·PixelJunk™ Monsters Ultimate
99% match · Tower Defense, Strategy
81% of 1,318 reviews positive

22·Bad Hotel
99% match · Tower Defense, Casual
34% of 373 reviews positive

23·Space Run
99% match · Tower Defense, Space
85% of 2,152 reviews positive

24·HERO DEFENSE
99% match · Tower Defense, Strategy
63% of 774 reviews positive
The closest matches to Unstoppable Gorg on Steam are Defense Grid: The Awakening, Fieldrunners, Fieldrunners 2, DG2: Defense Grid 2, Evil Defenders. They rank highest because their Steam community tags overlap most with Unstoppable Gorg's, and shared tags include Tower Defense, Strategy, Sci-fi.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Tower Defense, Strategy, Sci-fi count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Unstoppable Gorg's. Popularity never affects the ranking.