The Game Boy version of Boulder Dash was programmed by Beam Software and is somewhat similar to the NES version (not exactly the same since it was developed by a completely different company). It is a jolly re-imagining with different graphics, but the same devious level designs as the original. And it is of course monochrome, rather than colour.
Dragon’s Lair: The Legend is a 1991 platform game for the Nintendo Game Boy, developed by Motivetime and published by Elite Systems in Europe and Sony Imagesoft in North America.
Bizarrely, the game is a remake of the classic 1985 ZX Spectrum game Roller Coaster, but with Dragon’s Lair-style graphics and sound effects. Which is not a bad thing because Roller Coaster is a great game.
Altered Space is a somewhat obscure isometric platform puzzle game that was developed by British developer Software Creations and released exclusively for the Nintendo Game Boy in 1991.
Martianoids was released in 1987 on three different formats: ZX Spectrum, Amstrad CPC, and this MSX conversion. All three are pretty much identical in terms of gameplay; they feature a robot, walking through nine sectors of a scrolling landscape, fighting off alien robots that are trying to destroy a computer you are defending.
Ultimate Play the Game‘s 1987 release, Martianoids, is another US Gold attempt to recreate the thrills and spills of a genuine Ultimate game and failing miserably.
You can find some indication of this if you type “Martianoids longplay” into YouTube and seeing that there aren’t any videos. Almost every other Spectrum game has someone playing through it on YouTube; definitely every other Ultimate game, but not this one.
There is a story behind the Commodore 64 conversion of Bubbler, but to condense it into just a few sentences: the game was being converted in 1987 by an intermediary company for Ultimate, called Lynsoft, but was canned before release because it wasn’t fast enough.
The 1987 MSX conversion of Bubbler is arguably better than the Spectrum original because the speed is more consistent during play, which makes it more playable. In fact, it’s a game that borders on being superb, which is unusual for the later US Gold/Ultimate games which are generally considered to be inferior to Ultimate‘s earlier titles.
Bubbler is an isometric action game that was published in 1987 under the Ultimate Play the Game banner, but in reality is a US Gold game that wasn’t developed by the original Ultimate team. And it is an insanely difficult, but playable, game.