Yeah this is way too difficult so I'm just gonna list them from the top of my head
1) Inazuma Eleven - Kanashii Genjitsu
2) Inazuma Eleven - Burning Phase Special
3) Xenoblade 2 - Counterattack
4) Xenoblade Chronicles - You Will Know Our Names
5) Mario & Luigi: Bowser's Inside Story - In the Final
6) Kirby Star Allies - Boss Battle
7) FZero X - Big Blue
8) Street Fighter 2 - Guile's Theme
9) Under Night In Birth - Gathers Under Night
10) Rhythm Heaven - WISH Kimi wo Matenakute (Remix 5)
11) Rhythm Heaven - Kanashimi no Squall
12) Legend of Zelda: Ocarina of Time - Gerudo Valley
13) Super Smash Bros - Temple Theme
14) Super Smash Bros: Brawl - Main Theme
15) Pokemon HeartGold & SoulSilver - Champion Red Theme
16) Pokemon Diamond and Pearl - Cynthia Theme
17) Dragon Ball Z Dokkan Battle - Str Lr Super Vegito
18) Super Mario Galaxy - Gusty Garden Galaxy
19) Final Fantasy IV - Theme of Love
20) Final Fantasy X - Suteki Dane