本文へスキップ
Game Design

Checkpoint and retry flow basics for beginner game projects

A practical guide to placing checkpoints, shortening retry time, and making failure easier to understand in a first game.

公開日: 2026-06-24#Checkpoint#Retry#Difficulty#Beginner

Quick Start

Start with a tiny working version

Good checkpoint design is not about removing challenge. It is about shortening the distance between failure and the next meaningful attempt.

Build it in small code pieces

1. 値を用意する

Inspectorで変更できる値と表示先を置きます。

SaveRecoveryTutorial.cs
csharp
    [SerializeField] private TextMeshProUGUI statusText;
    [SerializeField] private float saveSlotIndex = 1f;
    [SerializeField] private float checkpointDistance = 2f;
    [SerializeField] private float retryCount = 3f;

2. 状態を変える

ボタンを押した時に、1つだけ状態を進めます。

SaveRecoveryTutorial.cs
csharp
    public void NextStep()
    {
        step = (step + 1) % 3;
        var label = step == 0 ? "保存地点を記録" : step == 1 ? "リトライを選ぶ" : "復旧警告を出す";
        if (statusText != null)
        {
            statusText.text = $"{label}\nsaveSlotIndex={saveSlotIndex:0.##}\ncheckpointDistance={checkpointDistance:0.##}\nretryCount={retryCount:0.##}";
        }

3. 画面に表示する

変わった結果を画面に出して確認します。

SaveRecoveryTutorial.cs
csharp
        if (statusText != null)
        {
            statusText.text = $"{label}\nsaveSlotIndex={saveSlotIndex:0.##}\ncheckpointDistance={checkpointDistance:0.##}\nretryCount={retryCount:0.##}";
        }
        Debug.Log($"セーブと復帰導線: {label}");

Complete script

SaveRecoveryTutorial.cs
csharp
using UnityEngine;
using TMPro;

public class SaveRecoveryTutorial : MonoBehaviour
{
    [SerializeField] private TextMeshProUGUI statusText;
    [SerializeField] private float saveSlotIndex = 1f;
    [SerializeField] private float checkpointDistance = 2f;
    [SerializeField] private float retryCount = 3f;

    private int step;

    public void NextStep()
    {
        step = (step + 1) % 3;
        var label = step == 0 ? "保存地点を記録" : step == 1 ? "リトライを選ぶ" : "復旧警告を出す";
        if (statusText != null)
        {
            statusText.text = $"{label}\nsaveSlotIndex={saveSlotIndex:0.##}\ncheckpointDistance={checkpointDistance:0.##}\nretryCount={retryCount:0.##}";
        }
        Debug.Log($"セーブと復帰導線: {label}");
    }
}

Inspector

Connect the UI reference in the Inspector, then use the button to confirm each value changes.

Summary

What to take away

A practical guide to placing checkpoints, shortening retry time, and making failure easier to understand in a first game.

The page is designed to help you move from reading to a small practical decision. Use the checklist above before jumping into the next related article.

Related guides

SYSAutosave feedback and checkpoint flow basicsA practical beginner guide to save notifications, checkpoint placement, and making restarts easier to understand.MAPThreat indicator and aggro readability design guideA practical guide to showing who enemies are targeting and where immediate danger is pointing without flooding the screen.