Please take a look at this page for detailed information.
http://smilegamebuilder.com/en/system-requirements/

It’s currently for Windows only. And we’re still in discussion about that topic.

We don’t guarantee it to operate in virtual environment.

Your computer might not be fulfilled the required condition to run SMILE GAME BUILDER.
Please check about required system environment on this page.
http://smilegamebuilder.com/en/system-requirements/

Your computer needs to correspond to OpenGL 3.0 or above to run SMILE GAME BUILDER.

GPU is a function (graphic card and such) that could display 3D data on your PC.
Sometimes CPU contains a function of GPC for some laptop PCs.
It might improve the situation if you update a driver for GPU.
However, a method of updating its driver is different from manufactures, so if you’d like to try it, please contact the manufacture of your PC.

There are some possibilities of that SMILE GAME BUILDER will not be displayed correctly and Windows Aero will not be working properly when Windows themes were set as these on the list below.
If SMILE GAME BUILDER doesn’t work right, please change your Windows theme to different ones rather than ones on the list.

[ Windows7 ]
Themes which cannot display 3D preview properly:
・Windows7 Basic
・Windows Classic
・High-Contrast #1
・High-Contrast #2
・High-Contrast Black
・High-Contrast White

[ Windows8.1 and Windows10 ]
Themes which cannot display 3D preview properly:
・High-Contrast #1
・High-Contrast #2
・High-Contrast Black
・High-Contrast White

It can create games for Windows for now.

It doesn’t support any scripting and/or programming languages to customize it.

Yes, you can import own materials into SMILE GAME BUILDER.
For more information, please read this data specification page for each material.
http://smilegamebuilder.com/en/3dmodelspec/

You can modify pre-packed models or drawings and use them for SMILE GAME BUILDER. However, models, illustrations, music and all other materials included in the software are under our company’s property, so we strictly prohibit using them on the other things, such as blogs, own applications, and other game making software and so forth. (You can upload your screenshots and movies.)
If you are planning to redistribute modified data to other SMILE GAME BUILDER users, please make sure to include our company’s copy rights in “ReadMe” text file and games.

Copy Rights Information:
© SmileBoom Co.Ltd. All Rights Reserved.

You cannot use them with game development tools of other companies.
However, the various assets included in SMILE GAME BUILDER can be used within our tools, but we do not guarantee the compatibility of the various assets between products and tools.
Users who purchased SMILE GAME BUILDER Exporter for Unity (“Exporter for Unity”) may use various assets on Unity, which is provided by Unity Technologies, in addition to SMILE GAME BUILDER but are prohibited from using them on any other game development tools. In addition, use of various assets is restricted to within the games generated with Exporter for Unity.
Please note that other assets included in the DLCs are subject to the terms of use of each DLC.

We allow you to use your own games for advertising purpose only.

There is no restriction to distribute your games which made by this software. Moreover, there will be no royalties or individual license required.
However, our company will not take full responsibility for any problems from distributing, selling and/or contents themselves that you might encounter from your game.

This version of SMILE GAME BUILDER cannot produce them at this moment.

SMILE GAME BUILDER itself cannot be used to create them, but the optional “SMILE GAME BUILDER Exporter for Unity” DLC will allow you to do so. However, there are additional requirements for production, so please contact us through the “Contact Us” page. Click here to visit the Steam page for SMILE GAME BUILDER Exporter for Unity.

Yes, you can. However, our company will not take full responsibility for any problems caused by them.

Yes, you can upload them.

No, you cannot distribute your game made by the Trial Version.

Absolutely. The production release can read data from the trial version.

It is one of online PC game distributer. You can purchase any kinds of major games to indie games with ease.

You can use PayPal, bank transfer, Pay-easy, and Steam Wallet Code, besides credit cards.

For now, it is only from Steam. However, we’re currently preparing to extend the market.

It’ based on terms and conditions license agreement for each DLC.

If you use both SMILE GAME BUILDER and Exporter for Unity, there is no restriction.

When the exported data from SMILE GAME BUILDER is loaded immediately after Unity activation, the import function of Unity may not work and various data may not be loaded correctly. On the Project Asset, right-click and select “reimport All” to reimport the data.

You can try several things from the Steam Client.

1) Clear Download Cache
https://support.steampowered.com/kb_article.php?ref=3134-TIAL-4638
2) Verify the application files
Launch Steam Client > right-click “SMILE GAME BUILDER” > Properties > Local Files > Verify Integrity of Application files
3) Uninstall/Reinstall SGB
Launch Steam Client > right-click “SMILE GAME BUILDER” > Properties > Local Files > Uninstall Application