In the Budokai Tenkaichi video game series, when two users utilize energy-based techniques against each other, they will collide in an energy struggle and only the loser will take a large portion of damage from the opponent's energy attack, with the additional force of their own technique. In Dragon Ball Z: Budokai Tenkaichi and 2, the attack must be of the same type (energy wave vs energy wave, while energy sphere vs energy sphere). If the user attacks with an energy beam, such as Goku's Kamehameha, his/her opponent must also use the same type of technique, such as Vegeta's Galick Gun. If the energy technique is not of the same type, then it will either cancel each other out, or effortlessly overpower the other. If opponent A uses the Kamehameha while opponent B uses the Big Bang Attack, the Kamehameha will neturalize the Big Bang Attack and inflict damage to the opponent.
In Dragon Ball Z: Budokai Tenkaichi 3, however, this is fixed so that even if the attacks are not of the same shape or type, they can still collide into each other. The force and damage it inflicts to the loser varies greatly. For example, if the full-powered Spirit Bomb was unable to overpower the 10x Kamehameha, the loser who used the Spirit Bomb will suffer an enormous amount of damage from both the Spirit Bomb and the 10x Kamehameha. In Dragon Ball Z: Supersonic Warriors 2, the energy struggle is also present, though both players have to activate their special attacks at the same time (or the spilt second right after the other activates a special attack). In Dragon Ball Z: Burst Limit, attacks can only collide if they are both energy beams. If an energy beam or energy sphere collides with an energy sphere, both attacks will be canceled out.