Peek-a-boo!
2 Players	Arcade
Jaleco 1993

Yet another "Arkanoid"/"Breakout" clone, "Peek-a-boo!" is worth mentioning for two reasons: it was developed by Jaleco, and is one of the few adult titles that actually has female-oriented content.
The game is divided in two sections that must be cleared in order. Each has a choice of 8 "models" available upon starting: 2 male and 6 female. They will gradually strip as the player clears each of his/her stages, and only when 6 of these models are completely stripped will the player be allowed to advance to the next section.

Arcade flyer

Besides the copying the play mechanics, Peek-a-boo! also includes Arkanoids' power-up items (whose icons look almost exactly the same) like "multiball", "laser", "slow speed", "paddle extension", etc.
Strangely, Jaleco also added colored "dots" on the play field in addition to the bricks. The ball traces paths as it comes in contact with them, but eliminating them is not a requisite to advance. Most likely a poor feature implemented to differentiate Peek-a-boo! from Taito's classic and avoid some lawsuits in the process.

The game faulters noticeably in it's technical department. It's color palette, graphic design and overall presentation gives it a sort of bootleg feel that almost kept Peek-a-boo! out of this article. The forgettable music and average gameplay don't help either.

The ladies (and gentlemen):
Peek-a-boo!'s art is on the good side and tends to be more erotic than usual (I'm all up for that). The 10 or so ladies available do suffer from a little "low-res" syndrome and one or two scary faces, but it's overall good. Extra points to Jaleco for not forgetting about female gamers and including models like "Daniel" (whose most extremely perturbing screenshot you can see by clicking on him. I dare you.)

Not really. As a clone of a much popular game, this Jaleco title does nothing to improve the gameplay formula and is actually less fun than the original. It doesn't mean it's a bad game, but sexy girls don't make up for it's bootleg-like presentation and meh gameplay.

Lady Killer
2 Players	Arcade
Yanyaka 1993

When you get tired of all the "Arkanoid" and "Super Qix" copies that plague this pseudo genre, it's time to give Yanyaka's "Lady Killer" series a try. Despite its creepy title it succeeds in bringing not only quality but also a very welcomed air of originality to adult games.
The series' first installment was licensed to Mitchell (creators of hit series "Pang!"), who took it as their own and two years later released a sequel.

Lady Killer's protagonist is Gonta, a funny little diver the player controls.
After choosing one of the first 6 girls (8 in total), you'll have to guide Gonta with the joystick over an invisible tile-grid set over water. His only skill is diving (he can't shoot or jump), and everytime he does so a tile turns, progressively revealing more of the girls' figure. Turn all tiles to clear the stage and have the girl lose some clothes, and repeat to eventually get the main prize: strange interactive masturbatory animations involving octopi, huge speakers, whips, and weird Pokemon-like creatures among others... Yep, Lady Killer borders the bizarre and is more on the "hardcore" side than other x-rated arcades.

Lady Killer - Arcade

One of the two bonus stages. The \objective is to click on every number progressively from 1 to 15 before the timer runs out. Seriously stupid.

Stages can be cleared quickly once you practice for a while and get used to the confusing fact that Gonta can actually swim AND walk on water tiles. But the fast-paced action is interrupted by incredibly stupid bonus stages, the worst one involving clicking scrambbled numbers in order before a timer runs out. Since when is counting from 1 to 12 a bonus game??

Gonta can only be underwater for a set amount of seconds before he runs out of air, so quickly finding another unturned water tile to resurface and catch a breath is a must. This diving/surfacing action makes tiles spin for a brief 1 or 2 seconds, instantly dispatching enemies who come in contact with it and turning out to be our diver's only way of getting rid of them.
Items that among others speed Gonta up, give him more air, or turn multiple tiles at a time randonmly appear behind tiles to help our diver out. Grabbing them all while dodging shots, avoid above and under water enemies, and trying to find an unturned tile to dive gives Lady Killer a somewhat addictive frenetic rhythm and a lot of fun.

As you can tell from the screenshots, the presentation is very colorful and clean, reflecting above-average quality. Gonta and his enemies are really well animated, detailed drawn, and their funny dying poses add to the game's charm.
The only tune that plays is quite good. Arcadey and hummbable but never annoying despite its repetitiveness. Differently remixed versions of this tune come back in the sequel.

The ladies:
Now this is a little too much . Lots of moans and screams when whips, vibrators, speakers and even small creatures become their sexual toys in animated scenes you can interact with by rapidly wiggling the joystick (cheap jokes aside). The more you wiggle, the more you get to see. What the hell is up with those white rats??

You should absolutely give Lady Killer a try if you either get tired of adult "Arkanoid" and "Super Qix" clones, or simply want to experience an original puzzle / action title.
The game's animations can be too much and a little on the weird side, but it's overall a solid original title.

Party Time
2 Players	Arcade
Mitchell 1995

Gonta the diver is back 3 years later in Mitchell's sequel "Party Time" (or "Part Ytime" according to the title screen some rookie designer devised).
Not much has changed, and Gonta can still be found diving away flipping tiles and eliminating any enemy that comes in contact with them.
It's worth mentioning that Mitchell toned down this sequel quite a bit in regards to its sexual content. Nudes are still here, but the bouncing breasts and borderline bizarre explicit animations were put away.

Party Time - Arcade

It seems like we just can't avoid these...

Other new touches are "Practice" and "Normal" play modes, new funny enemies (some of them harder to kill), three types of selectable kiddie bonus games we could certainly do without (sliding tile puzzle, memory match game, and that f****** scrambled number counting), different kinds of stage-specific surfaces (like sliding ice and slowing dirt), and new types of obstacles and tiles that can only be flipped under certain conditions.

Party Time - Arcade

The new "Practice" mode is more of a 3-stage tutorial than a game mode, and "Normal" mode now has 9 stages instead of 8.

In spite of all these changes, Party Time still looks like just a technical upgrade to its prequel. Gonta and his enemies have new, better animated sprites; the girls are sexier and less "hardcore", and the presentation hasn't lost any quality.
The same tune that played all throughout "Lady Killer" still plays here, only in different remixed versions.

The ladies:
Very sexy and slightly better-looking since the last time. Mitchell removed previous bizarre Pokemon rape animations and joystick wiggling scenes in favor of more "conservative" boobie shots (if such a thing even exists).

Only if you liked the first one. Party Time is just more of the same and it takes a couple of plays until you start noticing the slight changes in gameplay.
Technically great and still a lot of fast-paced fun, but dealing with annoying bonus games is still unfortunately a must.