[MarioNintendo]

I don't have much new suggestions other than Fire Emblem Awakening, Link Between Worlds, Shin Megami Tensei 4, Mario Kart 8 and Project X Zone (if you're into that kind of thing).

But for old, here's a few you might enjoy, if you haven't already:

Atomic Runner (Genesis) - see post above
Herzog Zwei (Genesis) - Early RTS, easy to get into and pretty deep!
OutRun (Arcade)
Road Fighter (Arcade/Famicom) - Game is a short and simple overhead driving thing, but really addicting for some reason. Try to finish it on Level 2 difficulty.
Einhander (PS1)
R-Type III (SNES)
Dragon's Spirit (NES)
Recca (NES/3DS VC)
Dynamite Headdy (Genesis)
Gunstar Heroes (Genesis)
Alien Soldier (Genesis)
Ikaruga (Gamecube/Steam)
X The Ball (Arcade) - Rare made some weird games
Elemental Master (Genesis)
Thunder Force III (Genesis)
Thunder Force IV (Genesis)
Rayforce (Arcade/Saturn/iOS)

That should kill some time.