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Program 02 · Educational games

Gota Certa

A mobile-first endless faller where a water droplet falls across three lanes. The player dodges the drain and the open faucet, escapes the sewer, and collects rooftop (rainwater harvesting), filter (purification), and leaf (extra life) — a fast metaphor for conscious water choices.

Agenda 2030

Alignment with the 2030 Agenda

The game articulates two UN Sustainable Development Goals. SDG 6 (Clean Water and Sanitation) is the explicit central theme; SDG 12 (Responsible Consumption) emerges from the choice mechanic between collecting and avoiding. Keep this in sync with the pedagogical manifest in the gota-certa repository (shared/game-data/pedagogy.json).

ODS 6

Água Potável e Saneamento

Assegurar a disponibilidade e gestão sustentável da água e saneamento para todos

The whole game is built on the droplet metaphor: every element — drain, sewer, open faucet, rooftop harvesting, household filter, leaf — corresponds to a real concept of water management and basic sanitation. The project's official description (package.json) declares SDG 6 as the central theme.

Evidências no jogo

  • Collectibles: rooftop (rainwater harvesting), filter (household purification) and leaf (life) represent sanitation solutions.
  • Obstacles: drain (game over), sewer (contamination) and open faucet (waste / life loss) represent sanitation failures and waste.
  • Theme declared in package.json: "SDG 6 (Water and sanitation). First game in the casual SDG series."

ODS 12

Consumo e Produção Responsáveis

Assegurar padrões de produção e de consumo sustentáveis

The mechanic forces quick choices across 3 lanes: chase the good (harvesting, purification) or dodge the bad (waste, contamination). Each decision is a micro-simulation of responsible consumption applied to water.

Evidências no jogo

  • Score increases by collecting rooftop and filter, rewarding harvesting and reuse patterns.
  • Life system penalizes the open faucet, teaching the cost of household waste.
  • Short sessions (30-90s) let students test multiple strategies per match, internalizing the tradeoff.

Open resource

One droplet, three lanes, dozens of decisions per minute

Gota Certa is free, requires no sign-up, and collects no personal data. It runs in any modern browser (desktop or mobile) and can be installed as an app (PWA). Each match lasts between 30 and 90 seconds — designed for short in-class sessions.

Open the game

On mobile, we recommend adding to the home screen for the best experience.

BNCC

Audience and BNCC

The game's content is calibrated to the strands of the Brazilian Common Curricular Base (BNCC) for Science and Geography in middle school, with a focus on the water cycle, basic sanitation, water resources, and public health.

Stage
Middle school (Ensino Fundamental II)
Curricular components
Science · Geography

Thematic strands covered

  • Water cycle
  • Basic sanitation
  • Water resources
  • Public health and water
  • Urbanization and drainage
  • Rainwater harvesting
  • Conscious water consumption
  • Sewage contamination
  • Waterborne diseases
  • Brazilian Sanitation Law (11.445/2007)

Programa

How to use it in class

  1. 01

    Before playing

    Open the conversation: how much water does a 10-minute shower use? Why is a blocked drain a public health problem? What are riparian forest, rainwater harvesting, and the Sanitation Law? The game's elements connect to those real concepts.

  2. 02

    Short sessions on rotation

    Each match lasts 30-90 seconds. In a 50-minute class, the whole group can play 5-10 times on rotation, comparing high scores. Encourage observation: 'which element cost you the most points?'

  3. 03

    Share and debate

    Use the daily score (daily seed) as a hook for discussion: the game tests reflex, but did the choices become part of the routine? Connect to household habits of water consumption.

Recurso

Quick facts

Platform
Modern browser (PWA installable on mobile)
Orientation
Mobile-first portrait (touch or keyboard)
Age range
Grades 6–9 (ages 11–14)
Duration
30 to 90 seconds per match
Identification
Anonymous — no sign-up
Ownership
CS Hub · use licensed to NCS (free for schools)

Curadoria

Pedagogical sources

Content is referenced from official Brazilian and international institutions on water, public health, and sanitation.

  • ANA (Brazilian Water Agency)
  • Funasa
  • WHO
  • UN-Water
  • MMA
  • Trata Brasil
  • IBGE
  • Law 11.445/2007 (Sanitation)
  • Law 9.433/1997 (National Water Resources Policy)

Realização

Credits

Concept, design, and technical direction by Prof. Guilherme Fonseca. First game in the casual SDG series, on the Godot 4 engine. Made available by NCS as educational material, under the ownership of CS Hub Tecnologia de Validação Ltda. For suggestions on classroom use or school partnerships, contact the team through the website's contact form.

Open the game

Direitos

Ownership and rights

The educational games are owned by CS Hub Tecnologia de Validação Ltda (CNPJ 64.407.447/0001-62, Londrina/PR), which grants NCS a license for institutional, educational, and training use. Use by schools and educators is free of charge. Authorship and technical direction: Prof. Guilherme Fonseca.