Penguin Land

Penguin Land, known as Doki Doki Penguin Land Uchū Daibōken (どきどきペンギンランド宇宙大冒険, lit. "Thump Thump Penguin Land: Outer Space Adventure"?) in Japan, is a Sega Master System game and the second game in the Doki Doki Penguin Land series. In this game you play as a Penguin going through a puzzle platformer stage and try to guide your egg around the polar bears, rocks and other hazards to the end of the stage. The game has a total of 50 stages and a level editor which can save up to 15 additional levels. The level editor data is stored on the games battery back-up RAM.

Source: Wikipedia, "Penguin Land", available under the CC-BY-SA License.