Museum of the Game ®

International Arcade Museum® — Killer List of Videogames®

Screw Loose

MARQUEE PICTURE NEEDED FOR Screw Loose - Click for details on how to contribute.


Navigate the Robop character around a 3-D perspective playfield while shooting enemies and gathering items for points. Avoid the Inchworm since it will steal your hands!

Screw Loose was produced by Mylstar in 1983.

Mylstar released 18 machines in our database under this trade name, starting in 1983. Mylstar was based in United States.

Other machines made by Mylstar during the time period Screw Loose was produced include: Hill Climb, Faster Harder More Challenging Q*bert, M.A.C.H. 3, Q*bert Qubes, and Games I, The


Name Screw Loose
Developer Mylstar (United States)
Year 1983
Type Videogame
KLOV/MOG # 9451
Class Wide Release
Genre Shooter
Conversion Class Gottlieb
Game Specific Screw Loose Pinout
# Simultaneous Players 1
# Maximum Players 2
Game Play Alternating
Control Panel Layout Single Player Ambidextrous
  • Joystick: 4-way (up, down, left, right) with button
  • Joystick: 4-way (up, down, left, right) with button
Sound Amplified Mono (one channel)
Cabinet Styles
  • Upright/Standard

Game Play

Your character, Robop, must navigate his way around a playfied shooting records, snipes and bees to earn points. Gathering hamburgers, nuts, briefcases and atoms will light up the bulbs. The levels advance when all the bulbs have been lit.

Robop must avoid the inchworm and pick up his hands if they become detached from his body. The game ends if all Robop's hands are pushed off the screen by the inchworm or he is destroyed by the Cherry Bomb.

The left joystick moves Robop, while the right joystick fires, just like Robotron: 2084. The joystick buttons activate Robop's Super!Charge that both speeds him up and shields him from attack.

Screw Loose KLOV/IAM 5 Point User Score: 0.00 (0 votes)

Log in to rate this game!



This was Tim Skelly's last game for Gottlieb/Mylstar. It was finally discovered in 2000.

Cabinet Information

The three prototypes were housed in generic black Gottlieb cabinets much like Qbert and Krull.

VAPS Arcade/Coin-Op Screw Loose Census

There are 14,958 members of the Video Arcade Preservation Society / Vintage Arcade Preservation Society, 9,547 whom participate in our arcade census project of games owned, wanted, or for sale. Census data currently includes 165,359 machines (6,939 unique titles).

Scarce - There are 4 known instances of this machine owned by Screw Loose collectors who are active members. Of these, 2 of them are original dedicated machines. One is a conversion in which game circuit boards (and possibly cabinet graphics) have been placed in (and on) another game cabinet. One is a set of circuit boards which a collector could put into a generic case if desired.

Wanted - There is one active VAPS member currently looking for Screw Loose.

This game ranks a 1 on a scale out of 100 (100 = most often seen, 1=least common) in popularity based on census ownership records.

This game ranks a 2 on a scale out of 100 (100 = most often seen, 1=least common) in popularity based on census want list records.

Rarity and Popularity independently are not necessarily indications of value. [More Information]


The CPU is the same as other Gottlieb/Mylstar games that utilize the GG-III architecture. The correct sound board is the later version found in games like M.A.C.H. 3 and The Three Stooges.

eBay Listings

Click to search eBay for Screw Loose Videogame machines and related items.

Click to search eBay for Mylstar for machines and parts.

When you click on links below to various merchants on this site and make a purchase, this can result in this site earning a commission. Such revenue helps to fund this site's operations. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.


  1. Log in to contribute content to this page
  2. Please consider donating to the International Arcade Museum Library