Here is a new Crossover Story Idea that is probably one of my most favorite Ideas that I've thought about. It's a Crossover between Team Fortress 2, (which is my favorite FPS game) and Lego Dimensions, (which is one of my favorite Lego video game).
Story Name: "Lego Dimensions: Enter the RED Mercenaries".
Plot: The RED Team of Mercenaries from Mann Co. were sent in to help out some Unusual Dimensions that are being invaded by some Evil Forces. Now turned into Lego Versions of Themselves, they must work together with other Characters to stop these Powerful Evil Forces. Let the games begin!
(The Main Characters):
*The RED Spy (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Scout (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Soldier (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Pyro (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Demoman (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Heavy Weapons Guy (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Medic (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Sniper (Lego Form), (From The "Team Fortress 2" Universe).
*The RED Engineer (Lego Form), (From The "Team Fortress 2" Universe).
*The BLU Team of Mercenaries (BLU Spy, BLU Scout, BLU Soldier, BLU Pyro, BLU Demoman, BLU Heavy Weapons Guy, BLU Medic, BLU Sniper, and BLU Engineer) (Lego Forms), (From The "Team Fortress 2" Universe).
(Special Character):
*Kamen Rider Horai, (If any one of you guys don't know where he's from, he is an "Kamen Rider Zi-O" Original Character made by somebody named: "DarkTidalWave" on Deviantart).
If anyone of you guys want to make this into a actual Crossover Story, all of you Readers and Writers could make it if you feel like it. And also, Peace Out Everybody!!!