Silkworm
Nintendo Entertainment System · 1988
About this game
Silkworm is a classic horizontally-scrolling shoot-em-up.
The main difference between this game and many other side-scrolling shoot-em-ups is that you will be on land as well as in the air.
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The first player would play as a helicopter, but if a second player joins the game, they would play as a jeep.
Both players would have to protect each other as well as themselves.
After a certain number of kills, a "goose" helicopter would form on the screen.
If the players managed to destroy it they would get a weapon's powerup.
This would go on throughout the entire game, and a "goose" could appear even during the fight with the end-of-level baddie.
About Nintendo Entertainment System
The Nintendo Entertainment System (1983 in Japan, 1985 in the West) revived the North American video game industry after the 1983 crash and established conventions — cartridges, licensing seals, save systems — that shaped the industry for decades. NES collecting is one of the most established retro markets: common titles remain cheap, but a well-known handful of low-print-run games (many from smaller third-party publishers) are among the most expensive video games in existence.
Gamevaro tracks Silkworm for Nintendo Entertainment System 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 Silkworm 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 NES release dates back to 1988.
Market values by condition
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-24 | Loose / Item only | NTSC-U | €25.90 |
| 2026-07-24 | Boxed (CIB) | NTSC-U | €145.44 |
| 2026-05-25 | Boxed (CIB) | NTSC-U | €141.79 |
Rarity & condition
Only a handful of market sales have been tracked for Silkworm, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common Nintendo Entertainment System 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 Silkworm worth?
Silkworm for Nintendo Entertainment System is currently worth €25.90 loose, €145.44 complete in box. Prices are based on real sales and update regularly on Gamevaro.
Is Silkworm rare?
Silkworm has only a handful of tracked market sales, suggesting relative scarcity compared to more common Nintendo Entertainment System titles.
What's the difference between loose, CIB and sealed for Silkworm?
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 Silkworm, loose is €25.90 and CIB is €145.44 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Ratings & Reviews
Also on other platforms
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