Turn	Date	Population	Funds	City score	Crime	Pollution
0	Jan 1900	0	$20,000	500	0	0
1	Apr 1900	0	$11,626	712	0	0
2	Jul 1900	0	$8,739	712	44	52
3	Oct 1900	0	$7,921	712	19	52
4	Jan 1901	0	$6,751	500	19	52
5	Apr 1901	0	$5,489	500	19	52
6	Jul 1901	0	$4,930	500	18	52
7	Oct 1901	0	$4,331	500	18	52
8	Jan 1902	0	$3,678	500	19	52
9	Apr 1902	0	$2,935	500	20	52
10	Jul 1902	0	$2,325	500	20	52
11	Oct 1902	0	$1,249	500	20	52
12	Jan 1903	820	$836	364	20	52
13	Apr 1903	1,600	$417	364	20	48
14	Jul 1903	2,760	$108	364	23	48
15	Oct 1903	4,160	$108	364	27	36
16	Jan 1904	4,840	$836	272	27	43
17	Apr 1904	4,600	$836	272	31	43
18	Jul 1904	3,960	$836	272	34	43
19	Oct 1904	3,860	$601	272	34	38
20	Jan 1905	3,320	$581	222	35	41
21	Apr 1905	3,080	$254	222	35	41
22	Jul 1905	2,880	$254	222	35	36
23	Oct 1905	2,780	$254	222	34	41
24	Jan 1906	2,360	$506	162	32	41
25	Apr 1906	1,760	$506	162	32	44
26	Jul 1906	1,540	$506	162	29	40
27	Oct 1906	1,040	$506	162	27	44
28	Jan 1907	1,400	$564	153	27	44
29	Apr 1907	1,880	$564	153	26	42
30	Jul 1907	1,700	$564	153	27	45
31	Oct 1907	1,640	$564	153	27	45
32	Jan 1908	1,500	$760	173	27	45
33	Apr 1908	1,320	$760	173	27	45
34	Jul 1908	1,940	$760	173	27	44
35	Oct 1908	2,800	$760	173	27	44
36	Jan 1909	3,360	$916	205	29	34
37	Apr 1909	4,180	$916	205	29	37
38	Jul 1909	5,140	$916	205	33	37
39	Oct 1909	5,720	$916	205	37	46
40	Jan 1910	6,060	$1,294	199	37	38
41	Apr 1910	6,720	$1,294	199	38	38
42	Jul 1910	6,720	$1,130	199	39	35
43	Oct 1910	7,260	$809	199	39	33
44	Jan 1911	7,340	$1,262	180	42	35
45	Apr 1911	8,260	$1,262	180	45	35
46	Jul 1911	9,200	$1,262	180	45	37
47	Oct 1911	9,900	$1,058	180	49	38
48	Jan 1912	10,700	$1,675	208	57	38
49	Apr 1912	11,480	$1,675	208	57	39
50	Jul 1912	11,160	$1,675	208	62	41
51	Oct 1912	10,660	$1,675	208	63	48
52	Jan 1913	10,440	$3,019	132	63	48
53	Apr 1913	9,600	$3,019	132	64	44
54	Jul 1913	10,520	$2	132	59	52
55	Oct 1913	13,140	$2	132	59	52
56	Jan 1914	15,100	$678	273	68	50
57	Apr 1914	17,220	$340	273	75	49
58	Jul 1914	18,680	$40	273	75	49
59	Oct 1914	19,740	$40	273	83	48
60	Jan 1915	21,400	$1,188	328	95	52
61	Apr 1915	22,380	$556	328	95	51
62	Jul 1915	22,240	$339	328	101	51
63	Oct 1915	22,020	$131	328	107	52
64	Jan 1916	21,200	$987	339	107	51
65	Apr 1916	20,060	$585	339	108	51
66	Jul 1916	19,860	$285	339	100	46
67	Oct 1916	19,080	$285	339	100	49
68	Jan 1917	16,940	$1,041	320	95	47
69	Apr 1917	14,640	$1,041	320	88	47
70	Jul 1917	13,420	$1,041	320	88	47
71	Oct 1917	12,340	$1,021	320	79	45
72	Jan 1918	11,240	$1,331	281	75	45
73	Apr 1918	10,340	$1,263	281	75	42
74	Jul 1918	9,800	$1,183	281	66	44
75	Oct 1918	9,280	$1,077	281	63	44
76	Jan 1919	8,420	$1,371	270	63	46
77	Apr 1919	7,400	$1,371	270	57	47
78	Jul 1919	6,940	$1,371	270	55	43
79	Oct 1919	6,660	$1,325	270	55	43
80	Jan 1920	6,360	$1,170	311	52	45

Status	Kind	Check	Detail
pass	step	environment	Environment check (snapshot, engine, key)
pass	step	launch	Launch run-city as a detached process
pass	step	supervise	Supervise in the foreground until run-city exits
pass	step	render	Timelapse video rendered
pass	step	notes	Append Notes to summary.md
pass	code_check	outputs-exist	all present
pass	code_check	sim-reached-deadline	ended Jan 1920 after 80 turns; scenario verdict None
pass	code_check	decisions-logged	80 rows for 80 turns
pass	code_check	llm-turns-valid	0/80 model turns failed
pass	code_check	video-decodes	duration 35.6s
pass	code_check	limits-respected	9.7 wall-minutes (model budget 45.0 min)
fail	judge	city-goal	population 6,360 (goal 10,000), city score 311 (score 6,360 / threshold 10,000)
pass	checklist	notes-explain-outcome	summary.md has a Notes section explaining the decline from peak pop 22380 to final 6360, citing model thoughts from turns 1, 30, and 80
pass	checklist	player-matches-request	result.json confirms player=gpt56luna model=openai/gpt-5.6-luna task=grow seed=6 as requested
pass	checklist	no-silent-outage	all 80 turns answered with 0 LLM failures, no gaps or autopilot stretches visible in run.log

GPT-5.6 Luna plays Grow a city

The city over time

Population

Funds

City score

Final map

Evaluation

Decision timeline

Ready to stop guessing if your outputs are good?