**Answer summary** (*thanks to everyone who solved the ones I couldn't*):

1. Chubbier, next not heavy

>! Fatter, then light > Faster Than Light (solved by [Saeïdryl][1])

2. Goku's friend wheat powder

>! Krillin's flour > Killing Floor (solved by [Saeïdryl][1])

3. Legolas' dishonesty

>! Elf Lie => Half Life (solved by [Paige Meinke][2])

4. The Iron man's father balloon for showing-off

>! The Stan Lee (creator of Iron Man) parade ball(oon) -> The Stanley Parable

5. Hot beverage for Spartacus' fellows

>! <strike>Romans' sake -> No Man's Sky</strike>  
>! Tea for Thracians -> Team Fortress 1  
>! or  
>! Tea for Thrace (the nation) -> Team Fortress

6. Higher cute marsupial

>! More tall wombat -> Mortal Kombat

7. Mixed great geographic feature

>! <strike>Stir ocean -> Star Ocean</strike>  
>! Mountain blend -> Mount & Blade (solved by [Milo P][4])

8. The 18th Ulysses, the 6th, the 15th and the greek 19th

>! Grant (18<sup>th</sup> President) F (6<sup>th</sup> letter of alphabet) O (15<sup>th</sup> letter of alphabet) tau (19<sup>th</sup> letter of Greek alphabet) -> Grand Theft Auto (solved by [Gustavo Gabriel][5])

9. Assault a person

>! Mug a man -> Megaman

10. Evening meal animal flesh in hot water

>! Supper meat boil -> Super Meat Boy


  [1]: https://puzzling.stackexchange.com/a/61839/43477
  [2]: https://puzzling.stackexchange.com/a/61840/43477
  [4]: https://puzzling.stackexchange.com/a/61850/43477
  [5]: https://puzzling.stackexchange.com/a/61842/43477