There have been celebrations worldwide today, so why not have a look at this obscure Game Gear title to mark the occasion?
The game in question is called The Berlin Wall, released in 1991 in the arcades and on the Game Gear by Kaneko. It plays similarly to Space Panic and Lode Runner, whereby you must navigate various platforms linked by ladders and trap enemies.
The only links to the Wall itself are that you must chip away bits of concrete, and there are poorly digitised photos of the Berlin Wall scattered throughout the game. Nice.
You'll have a hard time finding a copy of the game as it was only released in Japan, but at least Game Gear games are region-free.
Thanks to Chris Covell and Albrito. Also see Chris's excellent Famicom Tsushin page.