I had the same problem. I just googled it and I found the answer. It involves putting something into the game properties on steam. Google "how to get a steam game to open in window mode" and that should do the trick. If still no answers come back to this thread.

Any% if you are looking for a pretty chill and easy category that is a bit longer and has a a lot of exotic tricks to learn. Free play for a more difficult fast paced category with a lot of hard clips and tricks with no downtime in the run, but much shorter. I wouldn't recommend any other categories till you learn either of those.

LEGO Batman: The Videogame

LEGO Star Wars: The Complete Saga (PC/Console)

Which Category Do You Guys Recomend For Me To Start Of With

Can you speedrun Any% with a cracked version of the game?

How do I Get Lego Batman To Be Windowed?

Prnced

WiiSuper

AnAnonymousSource

Zacc

Maste_Rem

Mario Kart 64

Mario Kart: Double Dash!!

LEGO Harry Potter: Years 1-4

LEGO Star Wars II: The Original Trilogy (Console)

L.A. Noire

Wii Sports

Wii Sports Resort

LEGO Indiana Jones: The Original Adventures

LEGO Pirates of the Caribbean: The Video Game

LEGO The Lord of the Rings

LEGO Indiana Jones 2: The Adventure Continues

LEGO Star Wars III: The Clone Wars

Wii Play

LEGO Harry Potter: Years 5-7

LEGO Star Wars: The Complete Saga Category Extensions

Rust

203maxx