In Mega Man X4-Mega Man X6, X can use this attack infinitely (except in the Fourth Armor's version, where energy needs to be refilled like normal Giga Attacks). In Mega Man X8, the Nova Strike is modified along with the Ultimate Armor. It now has Weapon Energy (WE); however, it recharges over a small period of time (a matter of seconds, in fact). The only downside to this is that it prevents the Nova Strike from being used over and over. To compensate for this added weakness, the Nova Strike's travelling distance is increased, and it can now destroy all bosses in only two hits (the first hit depletes all of the boss's energy but one unit triggering the boss's overdrive, which is always mandatory).
In Mega Man X: Command Mission, X's Ultimate Armor is much different from the previous versions, and his Nova Strike is a series of explosions and powerful amounts of damage done to the enemy. It is one of the two strongest Hyper Modes of the game, along with Zero's exclusive Absolute Zero.
In Mega man X4-X6, the Nova Strike counts as an air-dash and therefore X cannot activate the Nova Strike and air-dash (or vice-versa). He also cannot dash on the ground and activate it. Although the Nova Strike is an invincible attack, it doesn't protect X from spikes; but in Mega man X5, X could use it to travel through the lethal laser beams in Zero Space without damage (or death).
- X also uses the Nova Strike in the crossover Project X Zone.
- In the Mega Man Zero series, one of the attacks from Copy X's first form is the Nova Strike.