Onslaught (1989)
Sega Genesis · 1989
About this game
Onslaught is a first-person shooter that centers around the Elite Interstellar Strike Force.
The player is a member of the team sent to a research colony after contact was lost.
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Upon arrival the team is immediately attacked and all alien lifeforms need to be eliminated.
The player needs to complete 13 levels grouped into different tiers and to progress all levels in a tier need to be completed, including a boss.
In addition there are three difficulty levels.
The game has the player move through the environment to reach another point, taking out objectives, or surviving for a allocated amount of time.
The different weapons include guns and a laser whip.
The game includes support for cooperative play, for up to four players with the Wi-Fi connection.
Competitive deathmatch games are not supported.
The Nunchuk is used to move and the pointer function of the Wii Remote is used to aim.
Motion controls are also supported by shaking to reload, throwing grenades and unleashing the whip.
Insect blood can blind and damage the character and it needs to be wiped off with a swipe.
When playing alone the team mates are controlled by the computer AI and they can be issued basic commands.
Later in the game it is possible to drive a vehicle.
About Sega Genesis
Known as the Mega Drive outside North America, the Sega Genesis (1988/1989) was Sega's most successful console and Sonic the Hedgehog's original home, fueling the "console wars" era against Nintendo's SNES. Genesis cartridge collecting is well-established: common sports and platformer titles are affordable, while sports-license and later-era games with smaller print runs can carry a meaningful premium.
Gamevaro tracks Onslaught (1989) for Sega Genesis with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.
Adding Onslaught (1989) to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This GEN release dates back to 1989.
Price history
Market values by condition
NTSC-U
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-14 | Item only | NTSC-U | €23.18 |
| 2026-05-17 | Item only | NTSC-U | €15.26 |
| 2026-05-17 | Complete in Box | NTSC-U | €103.50 |
| 2026-05-17 | New (sealed) | NTSC-U | €177.56 |
| 2026-05-17 | Graded New | NTSC-U | €349.27 |
| 2026-05-17 | Box Only | NTSC-U | €23.94 |
| 2026-05-17 | Manual Only | NTSC-U | €22.79 |
Rarity & condition
Only a handful of market sales have been tracked for Onslaught (1989), suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common Sega Genesis titles.
Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.
Frequently asked questions
How much is Onslaught (1989) worth?
Onslaught (1989) for Sega Genesis is currently worth €23.18 loose, €103.50 complete in box, and €177.56 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Onslaught (1989) rare?
Onslaught (1989) has only a handful of tracked market sales, suggesting relative scarcity compared to more common Sega Genesis titles.
What's the difference between loose, CIB and sealed for Onslaught (1989)?
Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. For Onslaught (1989), loose is €23.18 and CIB is €103.50 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Ratings & Reviews
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