Keitai Denjuu Telefang: Speed Version
Game Boy Color · 2000
About this game
In the year 2020 it has become possible to travel to the Denjuu world using D-Shots, special mobile phones.
Making friends and sharing telephone numbers with Denjuu has become popular among humans.
↓ Read more
The protagonist, Shigeki, despite having originally arrived in the Denjuu world by accident, becomes determined to travel the world with his new Denjuu companion, and make more new friends while he is there.
Keitai Denjuu Telefang (Japanese: 携帯電獣テレファング; Romaji: Keitai Denjuu Terefangu), also known as Telefang 1 (since there are two games in this series), is a video game for Game Boy Color released by Smilesoft in Japan.
It is available in two versions, Power and Speed.
The game was not released in English, and is best known among English audiences for the a bootlegged game version which was hacked and sold as a fake Pokémon game.
About Game Boy Color
The Game Boy Color (1998) added a color screen to the original Game Boy formula while remaining backwards compatible with the entire existing cartridge library. Its colorful, semi-transparent cartridge shells make it a visually distinct platform for shelf collectors, and several late-cycle exclusives — released just before the Game Boy Advance took over — are notably harder to find complete today.
Gamevaro tracks Keitai Denjuu Telefang: Speed Version for Game Boy Color 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 Keitai Denjuu Telefang: Speed Version 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 GBC release dates back to 2000.
Price history
Market values by condition
NTSC-J
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-18 | New (sealed) | NTSC-J | €48.10 |
| 2026-07-18 | Item only | NTSC-J | €10.93 |
| 2026-07-18 | Manual Only | NTSC-J | €7.11 |
| 2026-07-18 | Graded New | NTSC-J | €52.91 |
| 2026-07-18 | Complete in Box | NTSC-J | €28.42 |
| 2026-07-18 | Box Only | NTSC-J | €11.37 |
| 2026-07-16 | Item only | NTSC-J | €10.96 |
| 2026-07-16 | Box Only | NTSC-J | €11.40 |
| 2026-07-16 | New (sealed) | NTSC-J | €48.22 |
| 2026-07-16 | Manual Only | NTSC-J | €7.13 |
| 2026-07-16 | Complete in Box | NTSC-J | €28.49 |
| 2026-07-16 | Graded New | NTSC-J | €53.04 |
| 2026-07-14 | New (sealed) | NTSC-J | €48.14 |
| 2026-07-14 | Manual Only | NTSC-J | €7.12 |
| 2026-07-14 | Graded New | NTSC-J | €52.96 |
| 2026-07-14 | Box Only | NTSC-J | €11.38 |
| 2026-07-14 | Item only | NTSC-J | €10.94 |
| 2026-07-14 | Complete in Box | NTSC-J | €28.45 |
| 2026-07-13 | New (sealed) | NTSC-J | €48.12 |
| 2026-07-13 | Graded New | NTSC-J | €52.93 |
| 2026-07-13 | Manual Only | NTSC-J | €7.11 |
| 2026-07-13 | Box Only | NTSC-J | €11.37 |
| 2026-07-13 | Complete in Box | NTSC-J | €28.43 |
| 2026-07-13 | Item only | NTSC-J | €10.94 |
| 2026-07-12 | New (sealed) | NTSC-J | €48.12 |
| 2026-07-12 | Item only | NTSC-J | €10.94 |
| 2026-07-12 | Box Only | NTSC-J | €11.37 |
| 2026-07-12 | Graded New | NTSC-J | €52.93 |
| 2026-07-12 | Complete in Box | NTSC-J | €28.43 |
| 2026-07-12 | Manual Only | NTSC-J | €7.11 |
Market insights
Rarity & condition
Keitai Denjuu Telefang: Speed Version has a steady sales history on the tracked marketplaces, meaning enough copies circulate to establish a reliable market price.
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 Keitai Denjuu Telefang: Speed Version worth?
Keitai Denjuu Telefang: Speed Version for Game Boy Color is currently worth €18.51 loose, €28.42 complete in box, and €48.10 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Keitai Denjuu Telefang: Speed Version rare?
Keitai Denjuu Telefang: Speed Version has a steady sales history on the tracked marketplaces, meaning it trades hands regularly and isn't considered particularly rare.
What's the difference between loose, CIB and sealed for Keitai Denjuu Telefang: Speed Version?
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 Keitai Denjuu Telefang: Speed Version, loose is €18.51 and CIB is €28.42 — 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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