diff --git a/main/main.cpp b/main/main.cpp
index bf9aac8..f4f6b40 100755
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -19,9 +19,9 @@
 #include "steps/step0.h"
 #include "steps/step1.h"
 #include "steps/step2.h"
-#include "steps/step3.hpp"
+#include "steps/step3.h"
 #include "steps/step4.h"
-// #include "steps/step5.hpp"
+#include "steps/step5.h"
 #include "steps/step6.h"
 
 static const char *TAG = "main";
@@ -43,14 +43,11 @@ extern "C" void app_main(void) {
     // create_demo_ui();
     clean_bomb();
 
-    // xTaskCreate(poster_child_task, "tick_lvgl", 4096, NULL, 5, NULL);
-
-
-    // step0();
-    // set_game_time(30000);
-    // start_game_timer();
-    // clean_bomb();
-    // step1();
+    step0();
+    set_game_time(30000);
+    start_game_timer();
+    clean_bomb();
+    step1();
     clean_bomb();
     step2();
     clean_bomb();
diff --git a/main/steps/step3.hpp b/main/steps/step3.hpp
index bbfd282..c56207e 100644
--- a/main/steps/step3.hpp
+++ b/main/steps/step3.hpp
@@ -1,10 +1,51 @@
 #ifndef STEP_3_HPP
 #define STEP_3_HPP
 
+#include <random>
+#include "../drivers/bottom_half.h"
+#include <iostream>
+#include "../drivers/game_timer.h"
+#include <set>
+
 static const char *STEP3_TAG = "step3";
 
+std::random_device rd;
+std::mt19937 gen(rd());
+std::uniform_int_distribution<> puzzle_dist(0, 7);
+std::uniform_int_distribution<> puzzle_zero_dist(0, 15);
+std::uniform_int_distribution<> led_dist(0, 20);
+
 void step3(void) {
-    
+    set_module_time(3000);
+
+    // int puzzle = puzzle_dist(gen);
+    int puzzle = 0;
+    switch (puzzle) {
+        case 0:
+            lcd_print(&lcd, "Clear");
+
+            int green_indicators = puzzle_zero_dist(gen);
+            std::set<int> indicators;
+
+            while (indicators.size() < green_indicators) {
+                indicators.insert(led_dist(gen));
+            }
+
+            for (std::set<int>::iterator it = indicators.begin(); it != indicators.end(); it++) {
+                ESP_ERROR_CHECK(led_strip_set_pixel(leds, *it, 0, 60, 0));
+            }
+
+            while (1) {
+                if (get_module_time() <= 0) {
+                    ESP_LOGI(STEP3_TAG, "switch state: %i", get_switch_state(0));
+                    // get_switch_state();
+                }
+                vTaskDelay(pdMS_TO_TICKS(10));
+            }
+
+
+
+    }
 }
 
 #endif /* STEP_3_HPP */
\ No newline at end of file