Contra -ReBirth- follows on the heels of other contemporary Konami titles that revisit classic series, such as Contra 4 and Castlevania: The Adventure ReBirth with a throw-back to the original styling. ReBirth is much like Contra 4 as it follows on the heels of the SNES classic, Contra III: The Alien Wars. It returns to the franchise's classic sprite-based side-scrolling gameplay, featuring intense boss battles and rampant run-n-gun action throughout. It is the twelfth main game in the series.
The game takes place in 1973 where a force known as the Neo-Salamander Force has travelled from 2633 in order to destroy the Contra force and Earth's defenses preemptively. Series mainstay Bill Rizer and Genbei Yagyu of the Contra force are deployed back in time to stop the Neo-Salamander Force. Two other playable characters are also available when certain conditions are met in the game and they are: Browny (a robot), and Pliskin (a lizard-like alien).
Besides the graphical style from Contra III, the most obvious other influence is the inclusion of the dual-weapon system originally introduced in the SNES incarnation. The Spreadgun, Homing gun, and Laser all make a return as well. However, the weapon upgrade system from Contra 4 is absent (picking up the same weapon a second time would double its power and graphical flair). The game also features a two-player co-op option like the original titles in the series.
Contra Encyclopedia (Fan site dedicated to the official games in the Contra series. All versions of each game are covered. Information includes release dates, detailed game descriptions, regional differences, lots of trivia and interesting information about the games' developmental stages. There is also plenty of screenshots, links and additional resources)