Mega Man Battle Network 6: Cybeast Gregar
Game Boy Advance · 2006
About this game
Lan and his family have moved house to Cyber City, which is famous for its new technology.
Lan and Mega Man quickly make new friends, and find out about the legend of the Cybeasts, two ancient creatures with such power that they eventually destroyed each other.
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However, a shady organization is intent on reviving and controlling the Cybeasts for their own nefarious needs, and Mega Man gets caught in the middle! While the organization captures the phoenix-like Falzar, Mega Man captures the wolf-like Gregar.
By harnessing this new power, Lan and Mega Man must save the internet once again! Mega Man Battle Network 6 is an RPG-like game in which you navigate through both the real world and the cyberworld of the internet.
As Lan, you move through the real world, interacting with people and finding places to "jack-in" to the cyberworld for Mega Man to take control.
As Mega Man, you can fight viruses in a hybrid of turn-based and real-time battle: you select which battle chips you need to use each turn, and then use them while actively dodging enemy fire.
New to Battle Network 6 is the "Cross Change" system.
After beating certain enemy Navis, Mega Man can copy their strengths (as well as their weaknesses!) and use them to his advantage, similar to the original Mega Man games.
For example, you could take on the firepower of Heat Man, or the cutting power of Slash Man.
At a certain point in the game, Mega Man also gains control of the powerful Cybeast, Gregar.
Using this power, Mega Man can transform into a wolf-like Navi, boosting his attack power for three turns, and enhance certain battle chips.
If players continue to push Mega Man, he will enter the "Beast Over" state, where he gains even more power, at the cost of completely losing control and becoming severely weakened after returning to normal.
It's also possible to combine the Cross Change with Gregar, creating even more powerful attacks.
This game also links up to Mega Man Battle Network 6: Cybeast Falzar .
About Game Boy Advance
Nintendo's Game Boy Advance (2001) offered near-SNES-level graphics in a handheld and became a home for excellent ports as well as original titles across nearly every genre. GBA cartridges are generally durable and plentiful, making it an approachable platform for new collectors, though a few late-release RPGs and limited exclusives have become genuine chase items.
Gamevaro tracks Mega Man Battle Network 6: Cybeast Gregar for Game Boy Advance 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 Mega Man Battle Network 6: Cybeast Gregar 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 GBA release dates back to 2006.
Price history
Market values by condition
PAL
NTSC-U
NTSC-J
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-16 | Graded New | NTSC-U | €385.76 |
| 2026-07-16 | New (sealed) | NTSC-U | €350.69 |
| 2026-07-16 | Complete in Box | NTSC-U | €127.23 |
| 2026-07-16 | Item only | NTSC-U | €33.00 |
| 2026-07-16 | Manual Only | NTSC-U | €25.42 |
| 2026-07-16 | Box Only | NTSC-U | €70.14 |
| 2026-07-14 | Item only | NTSC-U | €30.63 |
| 2026-07-14 | Graded New | NTSC-U | €385.15 |
| 2026-07-14 | Complete in Box | NTSC-U | €126.04 |
| 2026-07-14 | New (sealed) | NTSC-U | €350.14 |
| 2026-07-14 | Manual Only | NTSC-U | €25.38 |
| 2026-07-14 | Box Only | NTSC-U | €70.03 |
| 2026-07-13 | New (sealed) | NTSC-U | €349.96 |
| 2026-07-13 | Complete in Box | NTSC-U | €125.98 |
| 2026-07-13 | Item only | NTSC-U | €30.61 |
| 2026-07-13 | Graded New | NTSC-U | €384.95 |
| 2026-07-13 | Box Only | NTSC-U | €69.99 |
| 2026-07-13 | Manual Only | NTSC-U | €25.36 |
| 2026-07-12 | Box Only | NTSC-U | €69.99 |
| 2026-07-12 | New (sealed) | PAL | €135.61 |
| 2026-07-12 | Graded New | PAL | €149.17 |
| 2026-07-12 | Complete in Box | PAL | €67.73 |
| 2026-07-12 | Box Only | PAL | €27.12 |
| 2026-07-12 | Complete in Box | NTSC-U | €125.98 |
| 2026-07-12 | Item only | NTSC-U | €30.61 |
| 2026-07-12 | New (sealed) | NTSC-U | €349.96 |
| 2026-07-12 | Graded New | NTSC-U | €384.95 |
| 2026-07-12 | Manual Only | NTSC-U | €25.36 |
| 2026-07-12 | Item only | PAL | €25.19 |
| 2026-07-12 | Manual Only | PAL | €16.95 |
Market insights
Rarity & condition
Mega Man Battle Network 6: Cybeast Gregar 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 Mega Man Battle Network 6: Cybeast Gregar worth?
Mega Man Battle Network 6: Cybeast Gregar for Game Boy Advance is currently worth €47.59 loose, €67.73 complete in box, and €135.61 factory sealed. Prices are based on real sales and update regularly on Gamevaro.
Is Mega Man Battle Network 6: Cybeast Gregar rare?
Mega Man Battle Network 6: Cybeast Gregar 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 Mega Man Battle Network 6: Cybeast Gregar?
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 Mega Man Battle Network 6: Cybeast Gregar, loose is €47.59 and CIB is €67.73 — CIB commands a premium because original boxes and manuals are fragile and often don't survive.
Is Mega Man Battle Network 6: Cybeast Gregar worth more in PAL or NTSC?
The PAL version of Mega Man Battle Network 6: Cybeast Gregar is currently worth €47.59 loose, versus €36.02 for NTSC-U. Regional price differences usually come down to print run size and regional collector demand.
Ratings & Reviews
Also on other platforms
More Game Boy Advance games