Hi everyone! I'm the developer of SIMPL, and I'd love to show you what I've been building.

Everyone who has ever sketched an algorithm has written pseudocode: plain, readable code meant for people, not machines. SIMPL makes it run. Write IF…THEN, FOR…NEXT, WHILE, press Run, and watch your idea come to life. Then keep going, all the way to graphics, sound and complete games.

🎓 Faithful to the Cambridge guide

• Runs the official Cambridge pseudocode (IGCSE, O Level, AS & A Level) exactly as written on the exam paper: records, files, classes, pointers, sets, enumerations.
• Cambridge strict mode flags anything that goes beyond the guide, with the section it refers to.

🚀 …and far beyond it

• CANVAS: windows, drawing, animation, keyboard input.
• SOUND: notes, melodies and retro chip-style effects.
• IMPORT: your own modules plus a standard library.
• BREAK, CONTINUE and EXIT for finer loop control.

🧰 A complete IDE, ready out of the box

• Editor with syntax highlighting and an interactive console.
• Step-by-step debugger with breakpoints and a live view of every variable: a trace table that fills itself in.
• Error messages in plain English that point to the line and say what to fix.
• Light and dark themes.

📖 A language and a book, written together

• A 31-chapter manual, from your first program to recursion, linked lists, OOP and games.
• Press F1 and it opens beside your code. Every example has an Open in editor button, and every example is tested.
• Exercises with worked solutions, plus guided projects (a quiz game, Snake from scratch).

🕹️ See how far it goes

Two complete programs written in SIMPL, commented line by line:

• Tetromino Tumble: a full falling-block game with music and sound effects.
• SIMPLR: a 1980s-style BASIC interpreter, with numbered lines, GOTO, GOSUB and a READY. prompt. A programming language written in a programming language.

✔ Free · ✔ Nothing to install · ✔ Windows & Linux · ✔ Works fully offline

👉 https://simpl-pseudocode.itch.io/simpl

It's version 1.0, so I'd really value your feedback: what you like, what's missing, what breaks. Happy to answer any questions!