Mega Man X7 is the first of the two games in the series to have 3D gameplay in addition to the standard 2D style. Similar to previous installments, the players must go through an early introduction stage, and then complete eight stages to defeat boss characters and obtain new powers from them. Chips must be used immediately after they are gained and cannot be deactivated, nor changed from one playable character to another. Once all the chips for that playable character are completely maxed out, that particular character can no longer receive any more chip upgrades and obtain supporting items for the health and weaponry.The game also has a New Game Plus feature, by completing the game and saving it, and then starting a new game from loading that particular save file. This feature allows for X to become available after the opening stage with any collected armor parts kept and all the chip upgrades from the previous game are retained.
When starting the game, the player has only access to returning Maverick Hunter Zero, a Reploid who fights with a saber, and newcomer Axl who uses three different types of guns. The player can send the two characters to the same stage and both can be changed whenever the player needs to. Based on the player's performance, the characters are given ranks across each mission.While Zero and X retain their common weaponry from previous games, Axl has a new ability called "Copy Shot". If the player destroys certain types of enemies with said technique, they will leave an item upon their destruction. If the item (a glowing red sphere) is picked up, Axl will transform into a copy of the enemy he destroyed, with all of its features (speed, weapon, etc.). In order to unlock the returning hero X, the player must rescue 64 reploids (out of a possible total of 128) or defeat the eight main bosses in order to unlock him. Unlike previous games, X can air dash and fully charge his buster by default. Armor capsules from Dr. Light also return, and after obtaining the full set, the player can choose between unarmored X or armored X on the Stage Select. An auto-aim feature is added for both Axl and X allowing the player to lock on to enemies. The target can be changed by pressing a dedicated button. While Zero does not have any standard long-range attacks, his ability to destroy projectiles with his Z-Saber from past games was replaced to repel projectiles instead to help compensate for this weakness.