>>15274204
I had fun playing Tales of the Abyss as co-op, but obviously it takes the right person to find it enjoyable, and TotA in general is pretty love it or hate it even within the greater series fanbase. Also probably a game that would go much longer than "a couple of days". As an aside, that game also saves system settings into its save data (essentially there's a minimum of two sets of save data, both game and system), so if you try to jump from using the multitap for three or four player, and then move down to two player using just the system's sockets, you'll have to either keep playing with the multitap, or delete and make a new system preference file for the game. I'd also maybe say Robot Alchemic Drive, but that only allows up to two players, and since it sounds like you'd be looking to pick up cheap games rather than set the system up for HDD loading, it's pretty expensive these days.
>it is cheaper to buy PS2 vidya than an actual 4 player system.
Pretty sure an old model Wii would be just as cheap, if not cheaper these days, could also play Gamecube (via disc, or USB via Nintendont), and have four native inputs without a multitap. Just saying.
Also, speaking of backwards compatibility, that's another idea with the PS2. Maybe consider some PS1 games like Crash Team Racing? Where I am that one's stayed pretty cheap even as the platformers have shot up the last few years (and haven't gone down due to the PS4 remakes, either).