The House of the Dead 3 will be released on the 7th February. The game introduced a number of new elements to the series back in 2002, including “rescue events,” a shot ranking and grading system that challenges players to shoot both quickly and accurately, and a Boss “cancel” bar that players must fill to fend off devastating attacks. The third game was originally to feature cel-shaded zombies, but fan outcry caused Sega to reconsider and utilize “realistic” zombies.
The House of the Dead 4 was exclusively a coin-op arcade game, released in 2005, and added hidden “treasure rooms” that contain score-boosting items, as well as interactive sequences that force players to push away grabby enemies. It is due to be released on PSN sometime in the Spring.