Castlevania: Order of Ecclesia (NDS, 2008)
LostWinds (WiiWare, 2008/iOS, 2011/PC, 2016)
Spider-Man: Web of Shadows (NDS, 2008)
 

Fortune Summoners: Secret of the Elemental Stone (PC, 2008 or 2009?) - WIP

​Bionic Commando: Rearmed (Multi, 2008)? - WIP

Kung Fu Panda (Multi, 2008)?
​​Penguin no Mondai: Saikyou Penguin Densetsu! (DS, 2008)?
Zeta's World (PC 2008)? - Zeux's World remix/update
Ainevoltas II (PC 2008)?
The Power (PC 2008)?
Final Vision (PC 2008)?
Treasure Hunter Man (PC 2008)?
Pieces (JayIsGames.com 2008)?
New International Track and Field (DS 2008)?

Castlevania: Aria of Sorrow (GBA, 2003/Mobile/Java, 2008) - Differences?
​​
Outliers: 
Super Smash Bros. Brawl (Wii, 2008)? - "The Great Maze" level in “The Subspace Emissary” mode - No ability gating and any level can be completed by any character, Save points and warp points
Dead Space (Multi, 2008)
Iji (PC, 2008/v1.7, 2017) - Action Platformer w/ RPG elements
Banjo-Kazooie: Nuts & Bolts (XB360, 2008)? - 3D, mini-game/challenge focused
Soul of Darkness (Mobile 2008/DSiWare)? - WIP

Check GameFAQs

​Super Smash Bros. Brawl (Wii, 2008) - "The Great Maze" level in “The Subspace Emissary” mode