The Commodore 64 version of Inside Outing features graphics by the game’s original designer – Michael St. Aubyn – although the coding itself was done by Timedata/Pamela Roberts.
Gameplay is identical to the Amstrad original. You play a thief exploring a big mansion, looking for 12 hidden jewels. Finding them is not entirely straightforward as some of them are hidden in nefarious ways. For example: in the pool table room you must ‘pot’ (ie. kick) the balls into the pockets in the right order to make the jewel appear, and even then it materialises under the table so is hard to spot.
Isometric action/adventures are not particularly fashionable on the Commodore 64, but Inside Outing is an example of one that works. Granted: the enemies are extremely annoying, but otherwise the game is very good.