Hello There!
Here is list of the games:
Digimon[]
Digimon Black and white version (the alternate history version of POKEMON red and blue)
Digimon Maroon and Lavender version (Alternate history version of pokemon gold and silver)
Digimon Ruby and sapphire (same as pokemon ruby and sapphire but with new Digimons)
Digimon Dawn and dusk (still same as their OTL version but with Pokemon diamond and pearl mechanic)
Digimon red and blue (same as pokemon black and white version)
Digimon X and Y (it's same as Pokemon X and Y but with new type and new digimons, except it's only on PS Vita)
and many spin-offs.
Pokemon[]
V-PET and it's sequels
Pokemon world 1 and it's sequels
Pokemon rumble arena
Pokemon World DS
Pokemon Orange and Purple (Alternate history Version of digimon's dawn and dusk)
Pokemon Lost evolution
Pokemon Pokexros wars: Red and blue
Pokemon racing
and many spin-offs i can't imagine.