The 3 that stand out the most for me thinking back on it
Typer Shark and Mud's (typing skills)
Really helped me get down my typing skills which translates to a lot of pc based games (even just chat). Mud's were some of my favorite fast paced games (multi-user dungeons). Godwar's was my shtick and as a Drow character you had a lot of powers you had to get out before an opponent could notice and respond to your presence.
MechWarrior: Sega Genesis (team work skills)
This was a crazy one I would play with family. There was a co-op mode that allowed one person to control the bottom half while the other person controlled the top half of your mech. You really had to cooperate and work together so it didn't turn into an actual physical brawl because of the frustrations.
Call of Duty: Zombies (game mechanics)
This was probably my first game that I really got into game/enemy mechanics. To survive to higher rounds you had to adapt and know what the zombies were gonna do. Later iterations kinda destroyed that feature with zombies stumbling and etc but I get they were trying to stay innovative and fresh, still killed the genre for me though.
Honorable mentions are the great RTS's that were everywhere in the 90's. Starcraft for sure but even blizzards previous Warcraft's and then of course C&C and even Dune (another sega game but solid RTS for it's time). Really though the skills for RTS's don't translate as direct to other games anymore (just got me better at the RTS's that I love) as more and more they become hero focused like what they did with WC3.
edit: grammar
You do not, in fact, count those buildings towards your houses square footage. Doing so would open yourself up to all sorts of liability.
For further considerations of those that are interested (ANSI Draft, figure 1, page 6, outside source as the real ansi website is just atrocious to navigate and I'm not gonna dox myself by loading up local code.)
All that aside, you're slapping a 25'x52' shed onto your 1/4 acre property? That's almost 20% of your land use not including lot encroachment setback, drainage, and basic driveway/building infrastructure. It's your property so definitely do as you wish, but to think this is a common practice or a desirable thing outside of niche hobbyists or being used for work related activities/storage is nonsense. Neighborhood flooding, no natural green spaces for habitats, it all sounds like a horrible dystopia on your mini-compound.