It doesn't help that the Kaioken also requires a certain amount of Ki to activate, so by the time you do reach times 3, you'll be left without any energy needed to pull of some of the more flashier combos. However, just like in Budokai, further stacking of the Kaioken results in a faster Ki drain, and at level 3, your Ki drains quick.
Like in Budokai, you can equip Goku with the Kaioken skill in order to boost his strength mid-battle, and just like in Budokai, you can stack it up to three times to further overclock Goku's abilities. Piccolo and Goku's "Full-Nelson Special Beam Cannon" may deal a lot of damage, but being a Taking You with Me attack by nature, it also puts your Goku in a critical state (unless you were smart enough to equip him with an item that regenerates his health before hand). You're better off launching it point blank after stunning the enemy. For something as iconic and damaging as the Kamehameha, it has a long windup time. Art Evolution: While both games are rendered via cel-shading, the second game takes more inspiration from the manga art style, as opposed to the first game's basing its art on the anime. Animation Bump: Comparing both games with each other, the second game as a lot more flair added to it, using dynamic camera angles when performing certain attacks, and for being more fluid in animation. Even if you add Super Saiyan Goku to the same team as Super Saiyan Gohan and Super Saiyan Goten, there is no option to trigger the Family Kamehameha. Ultimate Gohan would later return for Raging Blast 2. Adapted Out: In Raging Blast 1, the Saibamen, Great Ape Vegeta, Cell Jrs., Cui, Mecha Frieza, Super Buu's Piccolo absorption, and strangely enough Ultimate Gohan are all missing from the game and its story mode.