This is certainly a post I want to comment on. This is in no order. And I cannot list 10 games. Behold, the comment from an old true retro enjoyer is here!
Oni (this one is #1 for me)
Mario Forever (the global fanmake community is something)
N the ninja flash game (N v2.0, N+ and N++) (this game is something else)
Megaman X series (X1,X2,X3,X4,X5,X6)
GTA SA and VC
NFS series – Most Wanted, Carbon and Underground 1/2
Dragon Ball Z Budokai Tenkaichi 3 (2 player combat does not get any better)
Counter Strike Condition Zero/1.6
House Of The Dead 1/2
Metal Slug series (1,2,X,3,4,5,6,7)
A few extra mentions:
Mario Forever Galaxy (if Galactica and Mario franchise made a perfect child)
Genocide (too obscure, can DM full version personally)
VVVVVV
Duke Nukem Manhattan Project (the feels is pure rusty nostalgia)
This is certainly a post I want to comment on. This is in no order. And I cannot list 10 games. Behold, the comment from an old true retro enjoyer is here!
A few extra mentions:
N ninja was my favorite platformer until the recent Celeste. It is clearly one of the best flash game I played !