# ReactionLab 2 - Sandbox

> Ready to let your inner mad scientist shine?

Canonical page: [https://chrome-stats.com/d/hfgames.reactionlab2](https://chrome-stats.com/d/hfgames.reactionlab2)

## Overview

- **ID:** `hfgames.reactionlab2`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** HF\_Games
- **Category:** GAME\_SIMULATION
- **Downloads:** 13,496
- **Rating:** 4.33 / 5 (1,025 ratings)
- **Version:** 1.6.0
- **Last updated:** 2015-12-06
- **First published:** 2014-07-19
- **Publisher country:** CA
- **Data as of:** 2026-09-17
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=hfgames.reactionlab2)
- **Website:** [http://reactionlab.hforsyth.com](http://reactionlab.hforsyth.com/)
- **Privacy policy:** [http://hforsyth.com/reactionlab\_privacy\_policy.html](http://hforsyth.com/reactionlab_privacy_policy.html)

## Description

ReactionLab 2 - Sandbox invites you to unleash your creativity as you draw over 80 elements onto a dynamic canvas and watch fascinating particle interactions unfold in real time. With hundreds of particle types and nearly 140 achievements, this Chrome extension offers endless experimentation opportunities—try to discover every reaction or simply build amazing visual creations.

Key features include a massive reactions list, time control with pause and rewind, zoom capabilities with a minimap, as well as the ability to save your unique designs locally or share them effortlessly online. ReactionLab 2 is lightweight (only 1MB install size), free of ads and in-app purchases, and runs smoothly on any device, requiring only network permissions for sharing your work.

## Rankings

- #504,674 — Overall

## Review summary

ReactionLab 2 is a fun and educational sandbox physics app praised for its entertainment value, simplicity, and lack of in-app purchases. Users appreciate the unique chemistry experiments and community content. However, it suffers from outdated graphics, a small canvas size limiting creativity, and a lack of updates. Navigation of community creations is cumbersome due to poor search and filtering options. Additionally, the app lacks detailed tutorials or explanations for new users, making it sometimes confusing to fully enjoy.

### Pros

- Fun and entertaining sandbox game with satisfying physics and reactions
- Offers a unique and educational science experience with various experiments
- Low storage usage and simple interface with easy controls
- No in-app purchases, providing full access after purchase
- Community-created content enhances gameplay experience

### Cons

- App appears outdated with lack of updates since 2015
- Small canvas/field size limits creative possibilities
- Poor browsing and search functions for community creations with no favorites or filters
- Graphics are pixelated and could be improved for realism
- Lacks tutorials, detailed explanations, or in-game guidance for reactions

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Source: [Chrome-Stats](https://chrome-stats.com/d/hfgames.reactionlab2)