Needless to say, the game gets more challenging the more you play (and the more money you make). From simple one-story outdoor toilets in the middle of nowhere, you will soon need to demolish highrises in a crowded city. Big buildings require more careful planning, because you must minimize both explosives (i.e. cost to you) as well as damage to surrounding area (because you'll have to pay the insurance amount for any neighboring structure you inadvertently destroy). You can build up barricades around the target building to prevent other buildings from being damaged, but it could cost a lot of money. The game therefore requires a fine balance between practical strategic planning and a shrewd business sense. There is a wide range of explosives in the game, from basic dynamites, anite, and TNT to the powerful C-4. Once you finish demolishing all the 134 buildings included in the game, you can design your own buildings and cities using the included editor.

Operation Cleaner is an immensely enjoyable game that should appeal both to engineers and fans of unique strategy games. It's original, it's fun, and it will challenge you for hours on end. It's even educational – I learned a lot of interesting factoids about different building materials and physics from playing this game. The graphics are pretty ugly, but it's the gameplay that counts especially for strategy games – and here you won't be disappointed. Two thumbs up, way up!

There is also a sequel with additional features: check out the links below!