Yey responses. I might as well give my own view. Also, sorta bump too.
Short term stand ins:
* Retro games. There's a reason why I would rather just use an emulator if I were to play some NES, SNES, PSX and other classics rather than go to the trouble of using a virtual console or in some cases where retro games can be bought in Steam. Mainly since emulator roms, isos, and whatever forms are there, and since I can just freely download them, I can easily either drop them or play them until the very end before the eventual shelving. Also, I'm not a speedrunner that's why I shouldn't even bother filling up my library out of retro titles nor actually spend on an antique console to do the same D:
* Free to play MMOs. I admit, I used to be heavily invested in MMORPGs way back in high school and I would remember spending loads and loads of hours trying to be the best that I could be, and even using it as a way to build some sort of virtual social life. Heck, some of the friends I met are the people i played MMOs with. However, I simply don't have the time for such MMOs right now especially the Free 2 play ones which admittedly I can easily drop out off if I do not genuinely enjoy it.
Right now, I'm in the funny journey of playing EVERY SINGLE F2P (and obviously Pay2Win) MMO FPS game to see which game deserves to have a long term investment. ALL OF THEM have been disposable night stands btw.
Long Term Investments:
* Competitive Multiplayer games I genuinely enjoy. I don't think i need to say much about these kinds of games. I enjoy them for a reason, and its that I feel that its worth my time in getting good at. There's a reason why I love playing League of Legends since not only do i enjoy League as much as the next guy does, but I just simply love how every experience in League is a different clown fiesta than the previous game. Sure the meta does get stale, but metas don't exist without players ;). Also, I'm still finding my FIrst Person Multiplayer avenue for me. As much as I do enjoy Overwatch, I feel that i need to find a game that would be more fitting to me. Of course that's for me to find out on my own journey of self-discovery (Or Rainbow Six Siege). This is pretty much how i feel about every single multiplayer game for me. Every game is a different experience from the last. You'll never ever know what pops into that queue.
* Path of Exile = Oh boy. PoE. I could never ever not stop playing PoE during my off-days simply because this is the game that told me that Loot Based RPGs are still great. Despite PoE being rather repetitive like most Loot Based Diablo-esque action RPGs are, the number of different builds and other ways to play the game is just so limitless, and Grinding Gear Games, the developers of PoE do an excellent job in supporting the game and of course giving every exile a reason to be exiled to Wraeclast once again.
* Games with very expansive Modding communities (Though not PokeROmHacks. Sorry guys. Inb4Triggeredmembersdownvote my thread) = Classic Doom being one great example of a game with a VERY EXPANSIVE modding community. You'll never know what comes out of that ModDB page. I get heavily invested in playing said game and its mods in order to learn about the tenets and facets of game design in the perspective of game modders. Heck, Brutal Doom was a Doom mod that rekindled my love for Doom AGAIN, and game modding in general. There's so much to learn about game mods and the game engines that are being taken to the next level by modders and gamers alike.