You know your favorite game? Sum up your thoughts/the game itself in a joke.
I'll go first.

Freddi Fish 2 - This game is like scooby doo, expect more freddi instead of scooby, more fish than doo, and more 2 than... uhh... blank.

Master of Magic.. Because who would play amateur of mundane? amirite?

Have you played this game?

Final Fantasy 5: A bit too many failing grades for my tastes. (I note that this joke is solely about the alliteration of the game's title and not the game itself.)

The adult version of X-Com: XXX-Cum.

That was pretty stupid, but hey, everyone is.

Baldur's Gate

The joke: Baldur's Gate Enhanced Edition

How many demons do you need to change a lamp? None, light sources are fixed! :P

Morrowind

You start up as a joke and you end up as a joker

APPLAUSE?

Final Fantasy 5 (GBA English version): Pun-ishing Phantasy Phive

(In this translation, one character who appears in the second world tells a lot of puns, including the 'pun'ishment one.)

FF5 (PSX English version): Why should I burn? (Wyvern was mistranslated as "Y Burn". There are also Mind Flares, I believe.)

At least the crickets like it!

Arcanum: ought to be listed in the DSM-5 as the definition of bipolar.

Half-Life: Sierra Utilities will consume "Half" of your "Life" re-installing your entire OS, after you tried uninstalling the game.

Grand Prix Legends: I can do a full lap without cra$@&#***...

Alpha Centauri: Just show this to someone who haven't played the game yet.

Alpha Centauri: "Sister Miriam..."

Legacy of Kain: Soul Reaver... Oh, look it's Kain's sword! No, wait, it's a spirit eating sword! No, it's actually a Sarafan priest! No, it's a vampire overlord! No, wait, whaaaaat? It's all just Raziel, the temporally confused Soul Reaver.

The Witcher 3: Wild Hunt walks into a bar. It was an iron bar.