Step 1: Downloading the Gadget Trial demo

At the time of writing, the demo is available here.

Scroll down the page until you see the English heading 'Tryout'. Select one of the servers below to begin your download.

Step 2: Changing your regional settings to support Japanese

If you haven't already done so, you'll need to ensure that your operating system has support for Japanese.

2000
Control Panel → Regional Options → General Tab → Language settings → Japanese

XP/2003
Control Panel → Regional and Language Options → Languages → Supplemental Language Support → Install files for East Asian languages

After this, you'll need to set the default non-unicode language to Japanese:

2000
Control Panel → Regional Settings → General Tab → Set Default → Japanese

XP/2003
Control Panel → Regional and Language Settings → Advanced → Language for non-unicode programs → Japanese

(Flowcharts borrowed with gratitude from insani)

Step 3: Installing the demo

a) Extract the demo archive you just downloaded to a new folder, and then run 'setup'.

b) Click the second button from the left (次へ(N)>) on the bottom to continue with the installation.

c) Use the button on the top right (変更(C)) if you wish to install in a different directory to the default one. When you're done, click on the second button from the left (次へ(N)>) on the bottom to continue with the installation.

d) Click on the second button from the left (インストール(I)) on the bottom to continue with the installation.

e) After the installer has finished copying the files to your computer, it will ask you whether you want to run the program immediately. You'll need to install the patch first, so uncheck this box before clicking the second button from the left (完了(F)) on the bottom to finish installation.

Step 4: Installing the patch

a) Place all of the files from this patch in the root directory of the game (the same folder as GADGETTT.exe).

b) Run patch_demo.

c) Just press enter when the program asks you where the files for the patch and for Gadget Trial are. There should only be two such prompts.

d) You've now finished patching the Gadget Trial demo.