-Super Robot Wars West
A SRW game with western mecha series like Transformers, Pacific Rim, Megas XLR, Big guy and Rusty, SRMTHFG! and others tangentially mecha related like Motorcity, Generator Rex and MLAATR, with guest appearance by Mazinger USA.
-Super Robot Wars VG
Same as above, but entirely compromised of Video Game mecha series like Tech Romancer, Zone of the Enders, Viewtiful Joe, Cyberbots, Lost planet, Metal Gear Solid, Tron Bonne, Mystical Ninja, Drill Drozer, Sakura Taisen, Virtua On. Hell throw in some non exclusively mecha series like Ace Combat, Star Fox and Metroid.
-Mario & Sonic All Stars Kart Racing
Basically a perfect mash of All star racing transformed with Mario Kart 8 with an all star cast of nintendo and sega characters. Pulling levels based on all the francises involved (and some not even having playable reps) and cheating for the "retro cups" like bringing tracks from Diddy Kong Racing and F-Zero for the retro cups (Sega would bring retro tracks from both all star racing games).
-Nintendo Vs Capcom
Mahvel gameplay traditional fighting game with capcom and nintendo characters, hell, MVC3 had the base already, Task Master was basically Link and Nova had all of Captian Falcon's specials!