Kyphus

Kyphus

Atari 2600 · 1983

Buy on eBay

About this game

Over the years Apollo has released some strange games.

From the airline luggage simulator Lost Luggage to the egg throwing antics of Wabbit, Apollo was never afraid to release something different.

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Therefore it's no surprise that when a new unknown Apollo prototype surfaced, it featured some interesting gameplay.

However Kyphus may be the strangest game from Apollo yet...

Looking a little like a cross between Racquetball and Space Cavern, Kyphus is an odd game in which the player must maneuver a dumpy looking guy through a pseudo-3D maze of rooms avoiding what appears to be a glowing cloud that shoots lasers, while being followed by a multi-colored robot that just might be a monkey in disguise.

Like I said, this game is weird!.

Unfortunately, this prototype is very incomplete.

There appears to be no collision detection, few sounds, and almost no gameplay.

The only thing one can really do in this prototype is to move run from room to room, although with no collision detection implemented there is no threat from the robot or cloud.

Each room of the maze appears to have a different color, and has three to four exits (two on the sides and one at the top and bottom).

The maze is made up of 64 rooms, but doesn't appear to have a set pattern.

As you move through maze, you may notice the score and life counters start displaying odd letters and numbers.

These number and letters are actually variable values in hex decimal notation.

The programmer used these numbers to help determine the values of various game variables while developing the game.

The counters at the top of the screen display the players position coordinates, the left two digits in the score are a timer of some sort that is continually counting down, while the right two digits appear to be the room number.

It is unusual to see these in game unless it is very early in the development cycle.

Although the prototype isn't very playable, by taking a look in the game itself we can puzzle out some planned gameplay.

Hidden in the code are three words: Protect, Destroy, and Invoke.

It is thought that these are commands the player would give the robot to make it do certain things.

Also hidden in the game code are graphics for what appears to be a large monkey that would have replaced the robot.

It is currently unknown how the monkey would be used in the game, and there is no way to trigger it (without hacking the code) in the current prototype.

Although Kyphus is unplayble in its current state, it shows quite a bit of promise.

Getting the 2600 to display anything that looks remotely like 3D is an amazing feat.

It is thought that in the final version of the game the player would have a weapon of some type to shoot at the cloud and robot, but the object of the game is still unclear.

Hopefully a more complete version of the game will turn up someday, but for now we can be happy in that another lost prototype has finally been found.

Only one prototype of Kyphus is known to exist.

It is thought that in the final version of the game the player would have a weapon of some type to shoot at the cloud and robot, but the object of the game is still unclear.

A picture of the box was shown in a few Apollo advertisements.

It appears to show a wizard battling evil clouds in a temple which is fairly close to the gameplay in the current prototype.

Hidden in the code are three words: Protect, Destroy and Invoke.

It is thought that these are commands the player would give the robot to make it do certain things.

Also hidden in the game code are graphics for what appears to be a large monkey that would have replaced the robot.

It is currently unknown how the monkey would be used in the game, and there is no way to trigger it in the current prototype.

Data by MobyGames.com

About Atari 2600

The Atari 2600 (1977) was the console that first proved interchangeable game cartridges could sustain a mass-market business, effectively founding the home console industry as we know it. Most common 2600 titles are inexpensive today given how many units and copies were sold, but a small number of extremely rare releases — including several from Atari's own late-era prototype and licensed titles — are among the most valuable cartridges in retro collecting.

Gamevaro tracks Kyphus for Atari 2600 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 Kyphus 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 A2600 release dates back to 1983.

Price history

PAL · Loose / Item only
€39.01
+€0.50
▲ 1.3%
€38 €39 €39 €40 05-1706-1507-1007-2408-10

Market values by condition

NTSC-U

Box Only
€44.19
+ Add
Manual Only
€27.62
+ Add
Loose / Item only
€39.01
+ Add
Boxed (CIB)
€110.46
+ Add
Sealed / New
€173.39
+ Add
Graded New
€190.72
+ Add

Recent sales

DateTypeRegionPriceSource
2026-08-10 Box Only NTSC-U €44.19 pricecharting
2026-08-10 Sealed / New NTSC-U €173.39 pricecharting
2026-08-10 Loose / Item only NTSC-U €39.01 pricecharting
2026-08-10 Manual Only NTSC-U €27.62 pricecharting
2026-08-10 Boxed (CIB) NTSC-U €110.46 pricecharting
2026-08-10 Graded New NTSC-U €190.72 pricecharting
2026-08-09 Boxed (CIB) NTSC-U €110.46 pricecharting
2026-08-09 Sealed / New NTSC-U €173.39 pricecharting
2026-08-09 Manual Only NTSC-U €27.62 pricecharting
2026-08-09 Box Only NTSC-U €44.19 pricecharting
2026-08-09 Loose / Item only NTSC-U €39.01 pricecharting
2026-08-09 Graded New NTSC-U €190.72 pricecharting
2026-08-08 Manual Only NTSC-U €27.62 pricecharting
2026-08-08 Box Only NTSC-U €44.19 pricecharting
2026-08-08 Loose / Item only NTSC-U €39.01 pricecharting
2026-08-08 Sealed / New NTSC-U €173.39 pricecharting
2026-08-08 Graded New NTSC-U €190.72 pricecharting
2026-08-08 Boxed (CIB) NTSC-U €110.46 pricecharting
2026-08-07 Box Only NTSC-U €44.16 pricecharting
2026-08-07 Loose / Item only NTSC-U €38.99 pricecharting
2026-08-07 Sealed / New NTSC-U €173.28 pricecharting
2026-08-07 Graded New NTSC-U €190.61 pricecharting
2026-08-07 Manual Only NTSC-U €27.60 pricecharting
2026-08-07 Boxed (CIB) NTSC-U €110.40 pricecharting
2026-08-06 Graded New NTSC-U €190.41 pricecharting
2026-08-06 Manual Only NTSC-U €27.57 pricecharting
2026-08-06 Box Only NTSC-U €44.11 pricecharting
2026-08-06 Sealed / New NTSC-U €173.10 pricecharting
2026-08-06 Boxed (CIB) NTSC-U €110.28 pricecharting
2026-08-06 Loose / Item only NTSC-U €38.95 pricecharting

Market insights

📊
Trading near average
Current price €39.01 is close to the average of €39.13 over the tracked period (range: €38.51€39.55).

Rarity & condition

Kyphus 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 Kyphus worth?

Gamevaro hasn't tracked a market sale for Kyphus (Atari 2600) yet, so no current value is available. Prices are sourced from real marketplace sales, and this page will update automatically once sales data comes in.

Is Kyphus rare?

Kyphus 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 Kyphus?

Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. These are tracked as separate market values because the price gap between them can be significant, especially for older releases.

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Best Time to Buy

📊Average price period. Best historically: May
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Based on 198 price records over 2 years · avg €97.42

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