1. Terraria
2. Outer Wilds
3. Counter-Strike: Source
4. Red Dead Redemption 2
5. NieR:Automata™
6. Kerbal Space Program
7. Garry's Mod
8. Half-Life
9. Resident Evil 4 (2005)
10. Super Meat Boy

10. Realm of the Mad God Exalt
9. Raft
8. Resident Evil 6
7. Polyball
6. BIGFOOT
5. Blood and Bacon
4. Totally Accurate Battlegrounds
3. PUBG: BATTLEGROUNDS
2. THE FINALS
1. Rust

Note: Acquiring all achievements in a game classifies it as a "Perfect Game"

Black Mesa
Clustertruck
Counter-Strike 2
Counter-Strike: Source
The Elder Scrolls V: Skyrim Special Edition
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode Two
Halo: The Master Chief Collection
NieR:Automata™
Outer Wilds
Subnautica
Super Hexagon
Terraria

Realm of the Mad God Exalt - 2 achievements left
Geometry Wars 3: Dimensions Evolved - 4 achievements left
Portal 2 - 11 achievements left

Arma 3
Call of Duty: World at War
Garry's Mod
Halo: The Master Chief Collection
Lethal Company
NieR:Automata™
PAYDAY 2
Terraria

1. Outer Wilds
2. Rodina
3. Unturned
4. Garry's Mod
5. Two Worlds II HD