While Street Fighter IV features models and backgrounds rendered in 3D, the gameplay remains on a traditional 2D plane. Producer Yoshinori Ono has stated that he wanted to keep the game closer to Street Fighter II. A new system called "Focus Attacks" ("Saving Attack" for the Japanese version) has been introduced, as well as Ultra moves. The traditional six-button control scheme returns, with new features and special moves integrated into the input system, mixing classic gameplay with additional innovations.

Stephen Kleckner of 1UP.com has stated the game has a similar feel to Super Street Fighter II Turbo, but also has a few features from Street Fighter III 3rd Strike. Pressing both light attack buttons is still for throwing, and both heavy attack buttons are for the personal action or taunts. Both medium attack buttons are for the focus strike. Dashes and quick standing are also in the game. C.Viper is the only character who can perform a high jump.

It was intended that bonus rounds such as the car-smashing stage from earlier Street Fighter games would return. Ono later stated that the bonus stages would not be in the arcade game, citing the reason to be that the time players spend on bonus stages takes money from arcade operators.

Visuals

All the characters and environments in Street Fighter IV are rendered as 3D models with polygons, similar to the Street Fighter EX sub-series Capcom produced with Arika. However, there are a couple of key differences. Art director and character designer Daigo Ikeno, who previously worked on Street Fighter III 3rd Strike, added a stylized effect to give them a hand-drawn look, with visual effects accented in calligraphic strokes, ink smudges and ink sprays during the fights.

Focus Attacks

Focus Attacks, known as "Saving System" in the Japanese version, is a new system that is being introduced in Street Fighter IV. The focus attack is a move that allows the player to absorb an attack and launch a counter attack, and it is performed by pressing the medium punch and kick buttons simultaneously. There are two phases to the attack. In the first phase, the player will shift into a new stance, at which point he or she is able to absorb one attack from the opponent. The second phase is the counter attack. The longer the player holds down the medium punch and kick buttons the more powerful the attack will be. If the buttons are held for long enough the attack will be unblockable and cause the opponent to crumple slowly to the ground, allowing the player to follow up with a free hit. Attacks that were absorbed during the first phase of the focus attack still cause damage to the player; however, life lost from the opponent's attack will be regenerated afterward. In addition, during the first phase of the focus attack the player may perform a dash either forward or backward to cancel the focus attack. Finally, at the cost of half the super combo gauge, many special moves can be canceled into a focus attack. By executing a focus attack during the special move, the animation of the move will be cut short and go instantly into the focus attack animation. This allows players with precise timing to cancel special moves into focus attacks, and in turn cancel focus attacks into the forward dash, resulting in new combo possibilities. If a special move is blocked by the opponent, the new system allows players to cancel the blocked move with a focus attack, and then cancel the focus attack by dashing backward safely away from the opponent.

Ono has stated that this system was incorporated in order to shift the emphasis away from combos and toward a more realistic system he has compared to boxing, in which "the skill is in reading your opponent's move before he or she starts moving ... We haven't forgotten about combos and linked moves, but focus makes it so that you have to read your opponent." The system aims to make ground attacks as viable a way of approaching opponents as jumping was in previous games. The focus system is a core part of Street Fighter IV's gameplay.

Ultra Combos

In addition to the powered-up versions of special moves introduced in previous Street Fighter games such as Super Combos and EX Special Moves, the game also introduces a new type of powered-up special move officially dubbed the Ultra Combo. Ultra Combos are long and cinematic moves featuring a lengthy combination of punches, kicks and other fighting techniques. Just as there is a Super Combo gauge, there is also an Ultra Combo gauge (officially known as the "Revenge Gauge" or "Revenge Meter"), but whereas the Super Combo gauge fills up when the player hits their opponent or performs a special move, the Revenge Gauge fills when one takes damage from their opponent. Along with the Super Combos, Ultra Combos are one of the only times the camera breaks from its normal fixed position to show a more dynamic, cinematic view of the gameplay.