D4 Enterprise prepares to bring EGG Console ports to Steam, starting with Hydlide 3 PC-8801mkIISR port
D4 Enterprise has been known for porting numerous Japanese retro PC games via their Project EGG series. But while the company generally releases them on their own Project EGG website for PC in Japan—with a subscription-based system—and EGG Console for Nintendo Switch—the latter also releasing on eShops worldwide, we have spotted that D4 Enterprise looks set to newly bring their EGG Console ports to PCs worldwide via Steam by establishing their own corporate curator page there.
The first title we have spotted from D4 Enterprise's page shall be Hydlide 3: The Space Memories. It will be based on the PC-8801mkIISR version that originally came out in 1985.
For the record, the whole Hydlide trilogy has been technically completed on Nintendo Switch. The 1985 MSX version of the first Hydlide came out in September 2024, followed by the second game from the same platform in May 2025, and the 1989 PC-9801 Special Version of the third entry the following July.
You can find the official screenshots and descriptions for the new Hydlide 3 port from its Steam page right below. Just like the Switch EGG Console ports, the actual game in this port will be based on the original Japanese release, although Hydlide 3 already contains some English in its interface by default.
This is an action RPG released by T&E SOFT in 1985. The protagonist, chosen by God for their pure heart, embarks on an adventure to seal away evil consciousness.
The popular collision-based attack system from the previous game is back, and this time, new magic such as FIRE, ICE, WAVE, and JUMP are introduced. With the addition of the parameter FORTH (conscience), concepts of good and evil are expressed. The game also features information gathering through conversation mode, shopping in towns, character development, and a map six times larger than the previous game, surpassing it in both quality and quantity.
Known as an Active RPG at the time, this game places a strong emphasis on action. Players switch between attack and defense modes while engaging in collision-based combat with monsters. Defeating monsters earns experience points, allowing for level-ups and increased strength. When injured, resting in flat areas automatically restores health.
*The main game and gallery screen (*Gallery) are in Japanese version.
*Other menu screens and "How to play" screens are in English.
■ Controls
This game can be played with an Xbox / PlayStation / Nintendo Switch controller, or with a PC keyboard.
For the best experience, we recommend playing with a controller.
Please note that keyboard behavior changes depending on whether a controller is connected.
[When no controller is connected (PC keyboard controls)]
Z / X / A / S: Xbox controller A / B / X / Y
Q / W: Xbox controller LB / RB
1 / 2: Xbox controller LT / RT (Speed Change / Virtual Keyboard)
3 / 4: Xbox controller LS / RS (Virtual Keyboard Settings)
Esc: Xbox controller View (Rewind)
Space: Xbox controller Menu (Pause Menu)
[When a controller is connected]
The PC keyboard functions as the same input as the virtual keyboard.
■Controls Tip (Faithful to the Original)
This game reproduces the original control scheme.
Normally, Space (A button) = Confirm and Enter (B button) = Cancel, but during name entry only, Enter = Confirm (Space inputs a blank space).
After entering your name, please use Space (A button) to confirm selections.